10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 10-Q

[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 26, 2004

OR

[  ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                 to

Commission File Number 1-13449

QUANTUM CORPORATION

Incorporated Pursuant to the Laws of the State of Delaware

IRS Employer Identification Number 94-2665054

1650 Technology Drive, Suite 800, San Jose, California 95110

(408) 944-4000

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934, during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes [X]  No [   ]

Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Act).    Yes [X]  No [   ]

As of the close of business on October 28, 2004, approximately 182.4 million shares of Quantum Corporation’s common stock were issued and outstanding.

1

QUANTUM CORPORATION

INDEX

		Page Number
PART I—FINANCIAL INFORMATION
Item 1.	Financial Statements:
	Condensed Consolidated Statements of Operations	3
	Condensed Consolidated Balance Sheets	4
	Condensed Consolidated Statements of Cash Flows	5
	Notes to Condensed Consolidated Financial Statements	6
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	18
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	47
Item 4.	Controls and Procedures	47
PART II—OTHER INFORMATION
Item 1.	Legal proceedings	48
Item 2.	Changes in securities and use of proceeds	48
Item 3.	Defaults upon senior securities	48
Item 4.	Submission of matters to a vote of security holders	48
Item 5.	Other information	48
Item 6.	Exhibits and reports on Form 8-K	49
SIGNATURE		51
EXHIBIT INDEX		52

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PART I—FINANCIAL INFORMATION

Item 1.    Financial Statements

QUANTUM CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per-share data)
(Unaudited)

	Three Months Ended						Six Months Ended
	September 26, 2004			September 28, 2003			September 26, 2004			September 28, 2003
Product revenue	$	153,586		$	162,642		$	295,968		$	329,829
Royalty revenue		26,459			32,233			56,761			67,261
Total revenue		180,045			194,875			352,729			397,090
Cost of revenue		128,056			136,718			242,692			275,420
Gross margin		51,989			58,157			110,037			121,670
Operating expenses:
Research and development		21,613			26,196			44,542			53,127
Sales and marketing		21,004			24,801			44,418			48,972
General and administrative		11,786			12,931			23,206			27,122
Special charges		3,176			3,100			9,586			3,576
		57,579			67,028			121,752			132,797
Loss from operations		(5,590	)		(8,871	)		(11,715	)		(11,127	)
Interest and other income, net		2,651			2,913			4,114			5,046
Interest expense		(2,774	)		(5,399	)		(5,551	)		(11,554	)
Loss on debt extinguishment		—			(2,565	)		—			(2,565	)
Loss before income taxes		(5,713	)		(13,922	)		(13,152	)		(20,200	)
Income tax provision		430			24,186			3,180			27,254
Net loss	$	(6,143	)	$	(38,108	)	$	(16,332	)	$	(47,454	)
Net loss per share
Basic	$	(0.03	)	$	(0.22	)	$	(0.09	)	$	(0.27	)
Diluted	$	(0.03	)	$	(0.22	)	$	(0.09	)	$	(0.27	)
Weighted average common and common equivalent shares
Basic		180,913			174,903			180,313			174,228
Diluted		180,913			174,903			180,313			174,228

See accompanying notes to Condensed Consolidated Financial Statements.

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QUANTUM CORPORATION
CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands)

	September 26, 2004   (Unaudited)		March 31, 2004 (1)
Assets
Current assets:
Cash and cash equivalents	$	284,434	$	214,607
Short-term investments		5,000		50,800
Accounts receivable, net of allowance for       doubtful accounts of $8,648 and $9,988		101,661		117,397
Inventories		49,302		48,343
Deferred income taxes		27,501		27,514
Service inventories		51,950		51,258
Other current assets		26,366		36,625
Total current assets		546,214		546,544
Long-term assets:
Property and equipment, less        accumulated depreciation		35,615		40,377
Purchased technology and other intangible       assets, less accumulated amortization		52,129		60,874
Goodwill		45,690		45,690
Other long-term assets		6,460		12,073
Total long-term assets		139,894		159,014
	$	686,108	$	705,558
Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	62,653	$	67,341
Accrued warranty		33,932		38,015
Short-term debt		1,511		537
Other accrued liabilities		107,657		105,991
Total current liabilities		205,753		211,884
Long-term liabilities:
Deferred income taxes		27,127		27,125
Convertible subordinated debt		160,000		160,000
Total long-term liabilities		187,127		187,125
Commitments and contingencies
Stockholders’ equity:
Common stock		258,563		255,121
Retained earnings		34,665		51,428
Total stockholders’ equity		293,228		306,549
	$	686,108	$	705,558

(1) Derived from the March 31, 2004 audited Consolidated Financial Statements included in the Annual Report on Form 10-K of Quantum Corporation for fiscal year 2004.

See accompanying notes to Condensed Consolidated Financial Statements.

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QUANTUM CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)
(Unaudited)

				Six Months Ended
				September 26, 2004			September 28, 2003
Cash flows from operating activities:
	Net Loss			$	(16,332	)	$	(47,454	)
		Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
			Depreciation and amortization		20,739			24,454
			Deferred income taxes		15			21,279
			Impairment of former manufacturing facility		—			2,335
			Compensation related to stock incentive plans		505			259
			Changes in assets and liabilities:
			Accounts receivable		15,736			20,792
			Inventories		(959	)		2,631
			Accounts payable		(4,688	)		(26,280	)
			Accrued warranty		1,722			(5,079	)
			Income taxes payable		(4,083	)		615
			Other assets and liabilities		5,495			910
Net cash provided by (used in) operating activities					18,150			(5,538	)
Cash flows from investing activities:
	Purchases of short-term investments				(1,311,160	)		(876,658	)
	Proceeds from sale of short-term investments				1,356,960			857,587
	Purchases of property and equipment				(6,798	)		(7,301	)
	Proceeds from sale of facility				5,137			—
	Proceeds from sale of equity investment				5,138			—
Net cash provided by (used in) investing activities					49,277			(26,372	)
Cash flows from financing activities:
	Receipt of payment on receivable from Maxtor Corporation				—			95,833
	Settlement of 7% convertible subordinated notes				—			(287,500	)
	Issuance of 4.375% convertible subordinated notes (net of commissions and expenses)				—			155,207
	Principal payments of short-term debt				(537	)		—
	Proceeds from issuance of common stock, net				2,937			3,069
Net cash provided by (used in) financing activities					2,400			(33,391	)
Net increase (decrease) in cash and cash equivalents					69,827			(65,301	)
Cash and cash equivalents at beginning of period					214,607			221,734
Cash and cash equivalents at end of period				$	284,434		$	156,433
Supplemental disclosure of cash flow information:
	Cash paid during the year for:
		Interest		$	4,741		$	19,362
		Income taxes, net of refunds		$	771		$	3,840
	Notes payable issued for achievement of certain earn out provisions of M4 Data (Holdings) Ltd. acquisition			$	1,511		$	976
	Common stock issued for achievement of certain earn out provisions of Benchmark Storage Innovations Inc. acquisition			$	—		$	3,591

See accompanying notes to Condensed Consolidated Financial Statements.

5

QUANTUM CORPORATION
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1:    Description of Business

Quantum Corporation (“Quantum” or the “Company”) (NYSE: DSS) has two data storage business segments: the DLTtapeÒ business and the Storage Systems business. DLTtapeÒ designs, develops, manufactures, licenses, services, and markets tape drives (DLTtapeÒ, DLTtapeÒ VS, and Super DLTtapeÒ drives) and media cartridges (DLTtapeÒ and Super DLTtapeÒ media cartridges). The Storage Systems business consists of tape automation systems and services and disk-based backup systems.

Note 2:    Pro Forma Stock Compensation Expense

As permitted by SFAS No. 123 Accounting for Stock-Based Compensation (“SFAS No. 123”), Quantum accounts for employee stock-based compensation in accordance with Accounting Principles Board Opinion No. 25 Accounting for Stock Issued to Employees (“APB 25”) and related interpretations. Under APB 25, when the exercise price of its employee stock awards equals or exceeds the market price of the underlying stock on the date of grant, no compensation expense is recognized. Any deferred stock compensation calculated according to APB 25 is amortized over the vesting period of the individual stock awards. In general, the vesting period of these stock awards is graded.  Stock awards granted to nonemployees are accounted for at fair value in accordance with the provisions of SFAS No. 123, with the associated value recognized over the vesting period of the award.

Pro forma information regarding net income (loss) and net income (loss) per share is required by FAS 123. This information is required to be determined as if the Company had accounted for its employee stock awards (including shares issued under the Employee Stock Purchase Plan, collectively called “stock-based awards”), under the fair value method of FAS 123, as amended by SFAS 148 Accounting for Stock-Based Compensation —Transition and Disclosure. Stock-based awards have been valued using the Black-Scholes option pricing model. Among other things, the Black-Scholes model considers the expected volatility of the Company’s stock price, determined in accordance with FAS 123, in arriving at an option valuation.

For purposes of pro forma disclosures, the estimated fair value of Quantum’s employee stock options is amortized to expense over the vesting period of the option. The pro forma stock-based employee compensation expense has no impact on the Company’s cash flows. In the future, the Company may elect, or be required, to use a different valuation model, which could result in a significantly different impact on pro forma net income (loss). For purposes of this reconciliation, the Company adds back to previously reported net income all stock-based employee compensation expense that relates to acquisitions or to awards made below fair market value, then deducts the pro forma stock-based employee compensation expense determined under the fair value method for all awards.  Quantum’s pro forma net loss and net loss per share follow:

(In thousands, except per-share data)	Three Months Ended						Six Months Ended
	September 26, 2004				September 28, 2003		September 26, 2004			September 28, 2003
Reported net loss	$	(6,143	)	$	(38,108	)	$	(16,332	)	$	(47,454	)
Add back employee stock option expense		—			100			—			259
Option fair value amortization		(3,377	)		(4,673	)		(7,236	)		(9,431	)
Pro forma net loss	$	(9,520	)	$	(42,681	)	$	(23,568	)	$	(56,626	)
Reported net loss per share	$	(0.03	)	$	(0.22	)	$	(0.09	)	$	(0.27	)
Net effect per share of option fair value amortization		(0.02	)		(0.03	)		(0.04	)		(0.05	)
Basic and diluted pro forma net loss per share	$	(0.05	)	$	(0.25	)	$	(0.13	)	$	(0.32	)

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The weighted-average grant date fair values reported below have been estimated at the date of grant using a Black-Scholes option pricing model with the following weighted average assumptions:

	Stock Option Plans Three Months Ended		Stock Purchase Plan Three Months Ended
	September 26, 2004	September 28, 2003	September 26, 2004	September 28, 2003
Option life (in years)	3.04	2.08	1.55	1.50
Risk-free interest rate	2.92%	1.68%	2.00%	1.48%
Stock price volatility	0.71	0.81	0.74	0.68
Dividend yield	–	–	–	–
	Stock Option Plans Six Months Ended		Stock Purchase Plan Six Months Ended
	September 26, 2004	September 28, 2003	September 26, 2004	September 28, 2003
Option life (in years)	3.15	2.15	1.55	1.50
Risk-free interest rate	2.98%	1.65%	2.00%	1.48%
Stock price volatility	0.80	0.80	0.74	0.68
Dividend yield	–	–	–	–

The following is a summary of weighted-average grant date fair values:

	Three Months Ended				Six Months Ended
	September 26, 2004			September 28, 2003	September 26, 2004		September 28, 2003
Options granted under the Long-Term Incentive Plan,
Supplemental Plan and Stock Options Plans	$	1.29	$	1.31	$	1.55	$	1.33
Shares granted under the Stock Purchase Plan	$	1.46	$	1.02	$	1.46	$	1.02

Note 3:    Basis of Presentation

The accompanying unaudited Condensed Consolidated Financial Statements include the accounts of Quantum and its majority-owned subsidiaries. All material intercompany balances and transactions have been eliminated. The interim financial statements reflect all adjustments, consisting only of normal recurring adjustments that, in the opinion of management, are necessary for a fair presentation of the results for the periods shown. The results of operations for such periods are not necessarily indicative of the results expected for the full fiscal year. The Condensed Consolidated Balance Sheet as of March 31, 2004 has been derived from the audited financial statements at that date.  However, it does not include all of the information and notes required by accounting principles generally accepted in the United States for complete financial statements. The accompanying financial statements should be read in conjunction with the audited financial statements of Quantum for the fiscal year ended March 31, 2004, included in its Annual Report on Form 10-K.

Note 4:    Goodwill and Intangible Assets

Goodwill as of September 26, 2004 and March 31, 2004 included the following:

(In thousands)	Goodwill		Segment
ATL Products, Inc. (acquired October 1998)	$	7,711	Storage Systems
M4 Data		4,734	Storage Systems
Benchmark (allocated to DLTtapeÒ )		23,948	DLTtapeÒ
Benchmark (allocated to Storage Systems)		9,297	Storage Systems
	$	45,690

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Acquired intangible assets are amortized over their estimated useful lives, which range from 2 to 10 years.  In estimating the useful lives of intangible assets, management considered the following factors:

• The cash flow projections used to estimate the useful lives of the intangible assets showed a trend of growth that was expected to continue for an extended period of time;

• The tape automation products, in particular, have long development cycles and have experienced long product life cycles; and

• The ability to leverage core technology into new tape automation products and, therefore, to extend the lives of these technologies.

The following tables provide a summary of the carrying amount of intangible assets that will continue to be amortized:

(In thousands)	As of September 26, 2004							As of March 31, 2004
		Gross Amount		Accumulated Amortization			Net Amount		Gross Amount		Accumulated Amortization			Net Amount
Purchased technology	$	84,600	$	(46,249	)	$	38,351	$	84,600	$	(39,871	)	$	44,729
Trademarks		22,560		(11,361	)		11,199		22,560		(9,879	)		12,681
Non-compete agreements		2,516		(2,334	)		182		2,516		(2,091	)		425
Customer lists		14,100		(11,986	)		2,114		14,100		(11,720	)		2,380
Assembled workforce		4,082		(3,799	)		283		4,082		(3,423	)		659
	$	127,858	$	(75,729	)	$	52,129	$	127,858	$	(66,984	)	$	60,874

As of September 26, 2004 and March 31, 2004, net goodwill and intangible assets were $97.8 million and $106.6 million, respectively, and represented approximately 14% and 15% of total assets, respectively.

The total amortization expense related to intangible assets is provided in the table below:

(In thousands)	Three Months Ended					Six Months Ended
	September 26, 2004			September 28, 2003		September 26, 2004		September 28, 2003
Purchased technology	$	3,189	$	3,189	$	6,378	$	6,378
Trademarks		741		741		1,482		1,483
Non-compete agreements		122		132		243		264
Customer lists		133		573		266		1,146
Assembled workforce		187		205		376		410
	$	4,372	$	4,840	$	8,745	$	9,681

The total expected future amortization related to intangible assets is provided in the table below:

(In thousands)		Amortization
Six months ended March 31, 2005	$	8,591
Fiscal year 2006		16,253
Fiscal year 2007		14,025
Fiscal year 2008		9,699
Fiscal year 2009		3,561
Total as of September 26, 2004	$	52,129

Note 5:    Special Charges

In fiscal years 2005 and 2004, Quantum implemented plans to reduce costs in an effort to return to profitability. The restructuring charges that resulted from these cost reduction efforts relate to the following:

• Plans to outsource manufacturing

• Plans to consolidate most of the operations supporting our two business segments

• Other general expense reduction, including consolidating and streamlining operations and administrative functions.

8

These plans to reduce costs impacted both of our operating segments, DLTtapeÒ and Storage Systems, as well as corporate functions.

The following tables show the type of activity for the three months and six months ended September 26, 2004 and September 28, 2003.

(In thousands)	For the Three Months Ended					For the Six Months Ended
By expense type	September 26, 2004			September 28, 2003		September 26, 2004		September 28, 2003
Severance Costs	$	3,221		$	929	$	8,716	$	1,358
Facilities		(45	)		2,171		810		2,171
Fixed Assets		–			–		60		47
Total	$	3,176		$	3,100	$	9,586	$	3,576
By cost reduction actions
Outsource certain manufacturing and service functions	$	–		$	2,668	$	2,540	$	3,011
Consolidate the operations supporting our two business segments		3,176			–		7,035		–
Other general expense reduction		–			432		11		565
Total	$	3,176		$	3,100	$	9,586	$	3,576

Fiscal year 2005

In the first and second quarters of fiscal year 2005, a charge of $5.5 million and $3.2 million, respectively, was recorded primarily for severance benefits and severance related costs for 98 and 89 employees, respectively, impacting most Quantum functions and locations, particularly manufacturing outsourcing in the United Kingdom and research and development consolidation. 

A charge of $0.9 million was recorded for vacant facilities in the UK in the first quarter of fiscal 2005. 

Fiscal year 2004

The restructuring charges in the first and second quarters of fiscal year 2004 were for cost reduction efforts following the outsource of certain Quantum’s manufacturing to Jabil in fiscal year 2003, plans to outsource manufacturing of certain automation products in the U.K, and other headcount reductions. These cost reduction steps impacted both of Quantum’s operating segments, DLTtapeÒand SSG, as well as corporate functions.

In the first and second quarters of fiscal year 2004,

• Charges of $0.3 million and $0.4 million, respectively, were recorded for severance benefits for eight and nine employees, respectively, located at Quantum’s facility in Colorado Springs, Colorado. These costs resulted from steps to reduce procurement activities following the outsourcing of certain manufacturing to Jabil and reductions following the integration of the Benchmark acquisition. 

• Charges of $0.1 million and $0.5 million, respectively, were recorded for severance benefits for three and 20 employees, respectively, located in the U.K., mostly reflecting initial steps in the plan to outsource and eliminate an automation product manufacturing site in the U.K.

• A charge of $0.4 million was recorded in the second quarter of fiscal year 2004 for separation costs related to an executive officer.

• A charge of $2.3 million was recorded in the second quarter of fiscal year 2004 to write down its former manufacturing facility in Malaysia to its appraised value, after Quantum vacated this facility as part of the outsourcing of certain manufacturing activities to Jabil.

• Charges of $0.5 million were reversed in the second quarter of fiscal year 2004. This $0.5 million comprised of $0.2 million recorded in the first quarter of fiscal year 2002 for vacant facility costs at a facility in Irvine, California, and $0.3 million recorded in the second quarter of fiscal year 2003 related to severance charges for site and function consolidation activities. The facility charges were reversed as a result of a change in the underlying lease assumptions. The severance charges were reversed because costs were lower than originally anticipated.

9

The following two tables show the activity and the estimated timing of future payouts for cost reduction plans (for a complete discussion of Quantum’s special charge activity in prior years, refer to Note 6 in Quantum’s Annual Report on Form 10-K for the year ended March 31, 2004):

(In thousands)	Severance Costs			Facilities			Other			Total
Balance at March 31, 2004	$	2,617		$	4,647		$	—		$	7,264
DLTtape® special charges		2,958			—			—			2,958
Storage Systems special charges		2,537			855			60			3,452
Cash payments		(3,891	)		(910	)		(60	)		(4,861	)
Non-cash charges		(29	)		—			—			(29	)
Balance at June 27, 2004	$	4,192		$	4,592		$	—		$	8,784
DLTtape® special charges		2,603			—			—			2,603
Storage Systems special charges		718			—			—			718
Cash payments		(1,993	)		(755	)		—			(2,748	)
Reclassification from accrued liabilities		234			—			—			234
Special charge reversal		(100	)		(45	)		—			(145	)
Balance at September 26, 2004	$	5,654		$	3,792		$	—		$	9,446
Estimated timing of future payouts:
Fiscal Year 2005	$	5,654		$	1,952		$	—		$	7,606
Fiscal Year 2006 to 2008		—			1,840			—			1,840
	$	5,654		$	3,792		$	—		$	9,446

The $9.4 million remaining special charge accrual as of September 26, 2004 is comprised of obligations for severance and vacant facilities. The severance charges will be paid during the remainder of fiscal year 2005 and the facilities charges related to vacant facilities in Irvine, California; Colorado Springs, Colorado; and Boulder, Colorado will be paid over the respective lease terms, which continue through the third quarter of fiscal year 2008.

Note 6:    Net Loss Per Share

The following tables set forth the computation of basic and diluted net loss per share:

(In thousands, except per-share data)	Three Months Ended						Six Months Ended
	September 26, 2004				September 28, 2003		September 26, 2004			September 28, 2003
Net loss	$	(6,143	)	$	(38,108	)	$	(16,332	)	$	(47,454	)
Basic and diluted net loss per share	$	(0.03	)	$	(0.22	)	$	(0.09	)	$	(0.27	)
Weighted average shares outstanding used in computing basic and diluted net loss per share		180,913			174,903			180,313			174,228

The computations of diluted net loss per share for the periods presented excluded the effect of the following because the effect would have been antidilutive:

•    4.375% convertible subordinated notes issued in July 2003, which are convertible into 36.8 million shares of Quantum common stock (229.885 shares per $1,000 note) as of September 26, 2004

•    Options to purchase 31.9 million shares and 36.6 million shares of Quantum common stock were outstanding at September 26, 2004, and September 28, 2003, respectively.

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Note 7:  Inventories and Service Inventories

Inventories consisted of the following:  

(In thousands)	September 26, 2004		March 31, 2004
Materials and purchased parts	$	17,940	$	18,264
Work in process		2,779		1,597
Finished goods		28,583		28,482
	$	49,302	$	48,343

Service inventories consisted of the following:

(In thousands)	September 26, 2004		March 31, 2004
Component parts	$	28,572	$	28,192
Finished units		23,378		23,066
	$	51,950	$	51,258

Note 8:  Accrued Warranty and Indemnifications

The following table details the quarterly and year-to-date change in the accrued warranty balance:

(In thousands)	Three Months Ended						Six Months Ended
	September 26, 2004				September 28, 2003		September 26, 2004			September 28, 2003
Beginning balance	$	35,128		$	44,720		$	38,015		$	49,582
Additional warranties issued		6,399			6,335			9,816			12,056
Adjustments for warranties      issued in prior fiscal years		1,072			2,751			1,315			4,311
Settlements made in cash		(8,667	)		(9,303	)		(15,214	)		(21,446	)
Ending balance	$	33,932		$	44,503		$	33,932		$	44,503

Quantum warrants its products against defects for periods ranging from 12 to 39 months. A provision for estimated future costs and estimated returns for credit relating to warranty is recorded when products are shipped and revenue is recognized. Quantum’s estimate of future costs to satisfy warranty obligations is primarily based on estimates of future failure rates and future costs of repair, including materials consumed in the repair and labor and overhead amounts necessary to perform the repair.

The estimates of future product failure rates are based on both historical product failure data and anticipated future failure rates. If future actual failure rates differ from its estimates, Quantum records the impact in subsequent periods. Similarly, the estimates of future costs of repair are based on both historical data and anticipated future costs. If future actual costs to repair differ significantly from its estimates, Quantum records the impact of these unforeseen cost differences in subsequent periods.

Indemnifications

Quantum has off-balance sheet transactions consisting of certain financial guarantees, both express and implied, related to product liability and potential infringement of intellectual property. Other than certain product liabilities recorded as of September 26, 2004, Quantum did not record a liability associated with these guarantees because Quantum has little or no history of costs associated with such indemnification requirements. Contingent liabilities associated with product liability may be mitigated by insurance coverage that Quantum maintains.

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Note 9:    Credit Agreements, Short-Term Debt and Convertible Subordinated Debt

Quantum’s debt includes the following:

	As of or for the Six Months Ended
(In thousands)	September 26, 2004			March 31, 2004
Short-term debt (M4 Data (Holdings) Ltd. Debentures)	$	1,511		$	537
Convertible subordinated debt		160,000			160,000
	$	161,511		$	160,537
Weighted average interest rate		4.381	%		4.377	%

Convertible subordinated debt

On July 30, 2003, Quantum issued 4.375% convertible subordinated notes in the aggregate principal amount of $160.0 million due in 2010, in a private placement transaction. The notes are unsecured obligations subordinated in right of payment to all of Quantum’s existing and future senior indebtedness. The notes mature on August 1, 2010 and are convertible at the option of the holder at any time prior to maturity, unless previously converted, into an aggregate of 36.8 million shares of Quantum common stock at a conversion price of $4.35 per share. Quantum cannot redeem the notes prior to August 5, 2008. Quantum received net proceeds from the notes of $155.2 million, after deducting commissions and expenses. In August 2003, Quantum used the net proceeds from the sale of the notes plus cash to redeem its 7% convertible subordinated notes due in 2004.

On August 21, 2003, Quantum redeemed the $287.5 million of 7% convertible subordinated notes that had been issued in July 1997. The notes had a maturity date of August 1, 2004 and were convertible at the option of the holder at any time prior to maturity, unless previously redeemed, into shares of Quantum common stock and Maxtor common stock. The notes were convertible into 6.2 million shares of Quantum common stock (or 21.587 shares per $1,000 note) and 4.7 million shares of Maxtor common stock (or 16.405 shares per $1,000 note). Quantum previously had a recorded receivable from Maxtor of $95.8 million for the principal portion of the debt previously attributed to the Hard Disk Drive (“HDD”) group and for which Maxtor agreed to reimburse Quantum for both principal and associated interest payments. The redemption in August 2003 included all these 7% convertible subordinated notes and was at 101% of the aggregate principal amount. The aggregate redemption price of the notes was $290.4 million, which included a premium paid of $2.9 million. On August 14, 2003, Quantum received $95.8 million from Maxtor, which represented the full amount for Maxtor’s portion of the debt.

Short-term debt (M4 Data debentures)

Quantum acquired all the outstanding stock of M4 Data on April 12, 2001 for approximately $58.0 million in consideration. The purchase agreement also included additional contingent consideration to be paid annually from 2002 through 2005 based on future revenues, which may result in additional debentures being issued and this occurred in the first quarter of fiscal year 2004. The debentures of $0.5 million that were issued in the first quarter of fiscal year 2004 based on revenues in the preceding fiscal year and paid after being  called by the holders in the first quarter of fiscal year 2005.  The outstanding debentures of $1.5 million were issued in the second quarter of fiscal year 2005 based on revenues in the preceding fiscal year.

Credit line

In December 2002, Quantum entered into a secured senior credit facility with a group of banks, providing Quantum with a $100.0 million revolving credit line and a $50.0 million synthetic lease that contains the same financial covenants as the revolving credit line.  In March 2004, Quantum amended the secured senior credit facility to extend the maturity to March 2006 and adjusted several covenant requirements.  As of September 26, 2004, $90.3 million of this revolving credit line is committed to standby letters of credit, of which $50.0 million secures Quantum’s obligation to the lessor under its synthetic lease (see Note 13 “Commitments and Contingencies”). Borrowings under the revolving credit line bear interest at either the London interbank offering rate (LIBOR) with option periods of one to nine months or a base rate, plus a margin determined by a leverage ratio. The credit facility is secured by a blanket lien on all of the assets of Quantum and contains certain financial and reporting covenants, which Quantum is required to satisfy as a condition of the credit line.  In prior quarters Quantum violated certain financial covenants under this credit agreement and received waivers or amendments for such violations. There is also a cross default provision between this facility and the synthetic lease facility such that a default on

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one facility constitutes a default on the other facility. As of September 26, 2004, Quantum was in compliance with all of the credit line covenants.

Note 10:     Stock Incentive Plans

Stock Option Plans

Quantum has Stock Option Plans (the “Plans”) that provide for the issuance of stock options, stock appreciation rights, stock purchase rights, and long-term performance awards (collectively referred to as “options”) to employees, consultants, officers and affiliates of Quantum. The Plans have reserved 51.1 million shares of stock for future issuance.  As of September 26, 2004, 19.2 million shares of stock were available for grant. Options under the Plans generally expire no later than ten years from the grant date and generally vest over four years. Restricted stock granted under the Plans generally vests over two to three years.

A summary of activity relating to Quantum’s Plans follows:

	Options (In thousands)		Weighted-Avg. Exercise Price
Outstanding as of March 31, 2004	33,855		$	6.39
Granted	3,021		$	2.42
Exercised	(770	)	$	0.66
Canceled	(4,209	)	$	9.36
Outstanding as of September 26, 2004	31,897		$	5.76
Exercisable as of September 26, 2004	19,455		$	7.19

The following tables summarize information about options outstanding and exercisable as of September 26, 2004:

Range of Exercise Prices	Options Outstanding (In thousands)	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Options Exercisable (In thousands)	Weighted Average Exercise Price
$  0.96 – $  2.95	10,078	$	2.65	5.98	4,532	$	2.60
$  2.96 – $  3.78	6,831	$	3.36	8.26	2,414	$	3.27
$  3.82 – $  8.34	6,448	$	6.57	6.53	4,523	$	6.73
$  8.38 – $12.50	7,054	$	9.81	5.44	6,516	$	9.77
$12.50 – $24.11	1,486	$	15.22	4.73	1,470	$	15.24
	31,897	$	5.76	6.40	19,455	$	7.19

The effect on reported net loss and net loss per share of accounting for employee stock options under the fair value method is disclosed in Note 2 “Pro Forma Stock Compensation Expense”.

Note 11:    Income Taxes

The tax expense recorded for the three months ended September 26, 2004 and September 28, 2003 was $0.4 million and $24.2 million, respectively.  The current quarter’s tax provision reflects local foreign income taxes and state taxes.  The tax expense recorded for the six months ended September 26, 2004 and September 28, 2003 was $3.2 million and $27.3 million, respectively.  The tax expense for the periods prior to the second quarter of fiscal year 2005 reflected foreign withholding taxes, in addition to local foreign income taxes, and state taxes.  The prior year provision also reflected a $21.3 million charge to provide a valuation allowance against the Company’s net deferred tax assets.  The new Japan-US treaty became effective on July 1, 2004, or the beginning of the Company’s second quarter of fiscal year 2005, and eliminated withholding taxes on royalty income.  As a result, the Company’s income tax expense has decreased significantly in the second quarter of fiscal year 2005.

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Note 12:    Litigation

On August 7, 1998, Quantum was named as one of several defendants in a patent infringement lawsuit filed in the U.S. District Court for the Northern District of Illinois, Eastern Division. The plaintiff, Papst Licensing GmbH (“Papst”), owns numerous United States patents, which Papst alleges are infringed upon by hard disk drive products that were sold by HDD. In October 1999 the case was transferred to a federal district court in New Orleans, Louisiana, where it has been joined with other lawsuits involving Papst for purposes of coordinated discovery under multi-district litigation rules. The other lawsuits have Maxtor, Minebea Limited, and IBM as parties. The outcome of this patent infringement lawsuit is uncertain. Quantum currently cannot estimate the extent of the potential damages in the Papst dispute against it because the complaint by Papst asserts an unspecified amount of damages. As part of Quantum’s disposition of HDD to Maxtor, Maxtor has agreed to assume the defense of the Papst claims against HDD and has also agreed to indemnify Quantum with respect to litigation relating to this dispute.

On April 15, 2003, Storage Technology Corporation (“StorageTek”) filed suit against Quantum in the U.S. District Court in Colorado, alleging that Quantum infringes two patents relating to the use of an optical servo system in a tape drive. The suit seeks a permanent injunction against Quantum as well as the recovery of monetary damages, including treble damages for willful infringement. Trial has been scheduled for March 21, 2005. Quantum believes that StorageTek’s claims are without merit, that the patents are invalid and Quantum intends to defend itself vigorously. Given the inherent uncertainty of the litigation, Quantum currently cannot estimate the extent of the potential damages in the StorageTek dispute.

On August 8, 2003, a class action lawsuit was filed against Quantum in the Superior Court of the State of California for the County of San Francisco. Hitachi Maxell, Ltd., Maxell Corporation of America, Fuji Photo Film Co., Ltd., and Fuji Photo Film U.S.A., Inc. are named in the lawsuit as codefendants. The plaintiff, Franz Inc., alleges violation of California antitrust law, violation of California unfair competition law, and unjust enrichment. Franz Inc. charges, among other things, that the defendants entered into agreements and conspired to monopolize the market and fix prices for data storage tape compatible with DLTÒ tape drives. Quantum denies the allegations of the complaint and intends to defend itself vigorously against the claims asserted by Franz. Franz seeks an order that the lawsuit be maintained as a class action and that defendants be enjoined from continuing the violations alleged in the complaint. Franz also seeks compensatory damages, treble damages, statutory damages, attorneys' fees, costs, and interest. A class certification hearing has been scheduled for January 2005. Given the early stages and inherent uncertainty of the litigation, Quantum currently cannot estimate the extent of the potential damages in the litigation.

On December 30, 2003, a lawsuit was filed against Quantum and Maxtor Corporation in the U.S. District Court in the Northern District of California. The plaintiff, Matsushita Kotobuki Electronics Industries, Ltd. ("MKE"), alleged breach of contract, breach of fiduciary relationship, fraud, violation of California unfair business practices law, and unjust enrichment. MKE charged, among other things, that certain Quantum intellectual property transferred to Maxtor in connection with the purchase by Maxtor of Quantum's hard disk drive business belonged to MKE. The lawsuit was settled by the parties in September 2004.

Note 13:     Commitments and Contingencies

Synthetic Lease

In August 1997, Quantum entered into a five-year synthetic lease agreement with a group of financial institutions (collectively, the “lessor”) for the construction and lease of a campus facility in Colorado Springs, Colorado, comprised of three buildings. The campus was the center of the DLT business’ operations until the transfer in fiscal year 2002 of tape drive production to Penang, Malaysia. The Colorado Springs facility now houses only administrative, research and development, procurement resources and testing operations located in one of the three buildings. The lease is accounted for as an operating lease in accordance with SFAS No. 13 Accounting for Leases.

In December 2002, Quantum renegotiated this lease, which now expires in December 2007. The total minimum lease payments from the second quarter of fiscal year 2005 until the scheduled expiration date in December 2007 are estimated to be approximately $4.1 million and approximate the lessor’s debt interest service costs. The minimum lease payments will fluctuate depending on short-term interest rates.

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The lease is secured by a standby letter of credit issued under Quantum’s revolving line of credit and a blanket lien on all of the assets of Quantum. The revolving line of credit expires in March 2006 and at that time Quantum could be required to post cash collateral to secure the lease, unless other financial arrangements are made that are acceptable to the lessor.

The lease commitment requires Quantum to maintain specified financial covenants. If in future quarters Quantum were to fail to comply with these financial covenants and was unable to obtain a waiver, or amend the lease, for such non-compliance, the lessor could terminate the lease. This could result in Quantum having to purchase and/or cause a third party to purchase the facilities promptly and potentially at a substantial discount to their current appraised value.  There is a cross default provision between this facility and the credit line facility (refer to Note 9 “Credit Agreements, Short-Term Debt and Convertible Subordinated Debt”) such that a default on one facility constitutes a default on the other facility.   

At the end of the lease term, Quantum has the following options and obligations:

(1)	Quantum may renew the lease if the lessor accepts a renewal at its discretion;
(2)	Quantum may purchase the facility for approximately $50 million (the “stipulated sales price”); or
(3)	If Quantum has paid all sums owing under the lease and is not otherwise in default under the lease or the credit line facility at the end of the stated lease term, Quantum may find a third party to purchase the facility.  In such event, Quantum has guaranteed any shortfall between the net proceeds from the sale of the property to the third party and the stipulated sales price, up to a maximum amount payable equal to 87.7% of the stipulated sales price, or $43.9 million.

Appraised value of the facility, the collateral that would be used to satisfy the contingent obligation, was $50 million. At any time during the lease term, Quantum may purchase (or cause a third party to purchase) the facility for the stipulated sales price. If Quantum defaults under the lease, its only option is to purchase the facility for the stipulated sales price.

Commitments to purchase inventory

Quantum outsourced tape drive manufacturing to a contract manufacturer, Jabil, during the third quarter of fiscal year 2003. The Storage Systems business has increased its use of contract manufacturers for certain manufacturing functions during the same period. Under these arrangements, the contract manufacturer procures inventory to manufacture products based upon a forecast of customer demand provided by Quantum. Quantum is responsible for the financial impact on the contract manufacturer of any reduction or product mix shift in the forecast relative to materials that the contract manufacturer had already purchased under a prior forecast. Such a variance in forecasted demand could require a cash payment for finished goods in excess of current customer demand or for costs of excess or obsolete inventory.

As of September 26, 2004, Quantum issued non-cancelable purchase orders for $36.4 million to purchase finished goods from its contract manufacturers and had not incurred any significant liability for finished goods in excess of current customer demand or for the costs of excess or obsolete inventory.

Contingencies

Tax allocations under a Tax Sharing and Indemnity Agreement with Maxtor are the subject of a dispute. This Agreement between Quantum and Maxtor entered into in connection with the disposition of HDD provided for the allocation of certain tax liabilities.  The Agreement also provided for the indemnification by Maxtor of Quantum with respect to certain tax liabilities attributable to the conduct of business prior to the disposition of HDD. Maxtor and Quantum presently disagree as to the amounts owed under this agreement. The parties are in negotiations to resolve this matter, and no litigation has been initiated to date.  However, there can be no assurance that Quantum will be successful in asserting its position. If disputes under this agreement cannot be resolved favorably, Quantum may incur significant liabilities and costs to litigate and/or settle these disputes, which could have a material and adverse effect on its results of operations and financial condition.

Note 14:    Business Segment Information

Quantum’s reportable segments are DLTtapeÒ and Storage Systems. These reportable segments have distinct products with different production processes. DLTtapeÒ consists of tape drives and media.   Storage Systems consists of tape automation systems and service and includes disk based backup products. Quantum directly markets its products to computer manufacturers and through a broad range of distributors, resellers and systems integrators.

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Quantum evaluates segment performance based on operating income (loss) excluding special charges and other infrequent or unusual items.  Quantum does not allocate interest and other income, interest expense, or taxes to operating segments. Additionally, Quantum does not allocate all assets by operating segment, only those assets included in the table below:

(In thousands)	Three Months Ended
	September 26, 2004								September 28, 2003
		DLTtapeÒ		Storage Systems			Total			DLTtapeÒ		Storage Systems			Total
Revenue	$	108,108	$	71,937		$	180,045		$	130,247	$	64,628		$	194,875
Cost of revenue		71,778		56,278			128,056			86,903		49,815			136,718
Gross margin		36,330		15,659			51,989			43,344		14,813			58,157
Research and development		14,249		7,364			21,613			17,731		8,465			26,196
Sales and marketing		7,405		13,599			21,004			9,556		15,245			24,801
General and administrative		7,651		4,135			11,786			8,175		4,756			12,931
Special charges		2,343		833			3,176			2,982		118			3,100
Total operating expenses		31,648		25,931			57,579			38,444		28,584			67,028
Operating income (loss)	$	4,682	$	(10,272	)	$	(5,590	)	$	4,900	$	(13,771	)	$	(8,871	)
(In thousands)	Six Months Ended
	September 26, 2004								September 28, 2003
		DLTtapeÒ		Storage Systems			Total			DLTtapeÒ		Storage Systems			Total
Revenue	$	213,437	$	139,292		$	352,729		$	266,510	$	130,580		$	397,090
Cost of revenue		139,370		103,322			242,692			175,891		99,529			275,420
Gross margin		74,067		35,970			110,037			90,619		31,051			121,670
Research and development		29,031		15,511			44,542			35,386		17,741			53,127
Sales and marketing		16,335		28,083			44,418			18,852		30,120			48,972
General and administrative		14,787		8,419			23,206			17,377		9,745			27,122
Special charges		5,396		4,190			9,586			3,325		251			3,576
Total operating expenses		65,549		56,203			121,752			74,940		57,857			132,797
Operating income (loss)	$	8,518	$	(20,233	)	$	(11,715	)	$	15,679	$	(26,806	)	$	(11,127	)
(In thousands)	As of September 26, 2004								As of March 31, 2004
		DLTtapeÒ		Storage Systems			Total			DLTtapeÒ		Storage Systems			Total
Inventories	$	15,900	$	33,402		$	49,302		$	15,651	$	32,692		$	48,343
Service inventories	$	28,942	$	23,008		$	51,950		$	33,636	$	17,622		$	51,258
Property, plant and equipment, net	$	24,206	$	11,409		$	35,615		$	28,996	$	11,381		$	40,377
Goodwill and intangibles, net	$	36,698	$	61,121		$	97,819		$	38,738	$	67,826		$	106,564

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Note 15:    Comprehensive Loss

Total comprehensive loss, net of tax if any, for the three months and six months ended September 26, 2004, and September 28, 2003, is presented in the following table:

(In thousands)	Three Months Ended						Six Months Ended
	September 26, 2004			September 28, 2003			September 26, 2004			September 28, 2003
Net loss	$	(6,143	)	$	(38,108	)	$	(16,332	)	$	(47,454)
Foreign currency translation adjustment		(8	)		(242	)		(432	)		686
Total comprehensive loss	$	(6,151	)	$	(38,350	)	$	(16,764	)	$	(46,768)

Note 16:     Recent Accounting Pronouncements

In July 2004, the Emerging Issues Task Force (“EITF”) issued EITF Issue No. 02-14 Whether an Investor Should Apply the Equity Method of Accounting to Investments Other Than Common Stock. This issue addresses the determination of whether an investment is in-substance common stock and when to perform that evaluation but does not address the determination of whether an investor has the ability to exercise significant influence over the operating and financial policies of the investee. The pronouncement is effective for fiscal periods beginning after September 15, 2004. For existing investments, the investor should make an initial determination as to whether the investment is in-substance common stock based on the circumstances existing as of the date of first application of this issue. The Company does not believe that the adoption of this standard will have a material impact on its consolidated balance sheet or statement of operations.

The Financial Accounting Standards Board (“FASB”) issued FASB Staff Position (“FSP”) 03-1-1, Effective Date of Paragraphs 10-20 of EITF 03-1, The Meaning of Other Than Temporary Impairment, delaying the effective date for the recognition and measurement guidance of EITF 03-1, as contained in paragraphs 10-20, until certain implementation issues are addressed and a final FSP providing implementation guidance is issued. The final FSP providing implementation guidance is expected to be issued early in December 2004.  The disclosure requirements of the consensus remain in effect.  The Company will continue to monitor this project and issue interpretive guidance when important decisions are reached by the FASB.

Note 17:     Subsequent Event

In October, 2004, the Company announced a definitive agreement (the “Agreement”) to acquire Certance Holdings (“Certance”), a privately held company headquartered in Costa Mesa, California. Certance is a supplier of tape backup drives and data protection solutions. Under the terms of the Agreement, stockholders of Certance will receive $60 million in cash. The transaction is subject to customary closing conditions, including regulatory review, and is expected to close in the Company’s third fiscal quarter.

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Item 2:  Management's Discussion and Analysis of Financial Condition and Results of Operations

This report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements in this report usually contain the words “will,” “estimate,” “anticipate,” “expect”, “believe” or similar expressions and variations or negatives of these words. All forward-looking statements including, but not limited to, (1) our expectation that the current installed base of tape drives will result in continued demand for the tape media cartridges, (2) our expectation that media royalties will continue to be a significant source of our DLTÒ revenues, gross margins, operating income and cash flow, (3) our expectation that we will continue to derive a substantial majority of our revenue from products based on our tape technology, (4) our expectation that we will incur additional future charges for anticipated restructurings, including future payments equal to $7.6 million in fiscal year 2005 and $1.8 million between fiscal years 2006 and 2008, (5) our intention to pursue product initiatives in order to further improve gross margins, increase operating efficiencies and effectiveness, and reduce operating costs, (6) our belief that strong competition in the tape drive, tape media and tape automation systems markets will result in further price erosion, (7) our expectation that we will realize annual cost savings from our first half 2005 restructuring programs of approximately $12 million, (8) our expectation that any debentures that we issue after the date of this Quarterly Report on Form 10-Q in connection with our acquisition of M4 Data will total approximately $2 million in principal amount, (9) our belief that our existing cash and capital resources will be sufficient to meet all currently planned expenditures and sustain our operations for the next 12 months, (10) our expectation that we will return to profitability, (11) our belief that our ultimate liability in any infringement claims made by any third parties against us will not be material to us, (12) our expectation that we will make additional acquisitions in the future, (13) our expectation that our future contractual payment obligations equal no more than approximately $43.1 million within one year, $9.8 million between one and two years, $5.1 million between two and three years and $223 million beyond three years, (14) our belief that our total foreign exchange rate exposure is not significant, are inherently uncertain as they are based on management’s expectations and assumptions concerning future events, and they are subject to numerous known and unknown risks and uncertainties. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. As a result, our actual results may differ materially from the forward-looking statements contained herein. Factors that could cause actual results to differ materially from those described herein include, but are not limited to, (1) the amount of orders received in future periods; (2) our ability to timely ship our products; (3) uncertainty regarding IT spending and the corresponding uncertainty in the demand for tape drives and tape automation products; (4) our continued receipt of media royalties from media manufacturers at or above historical levels; (5) a continued trend toward centralization of storage; (6) our ability to achieve anticipated pricing, cost and gross margin levels, particularly on tape drives, given lower volumes and continuing price and cost pressures; (7) the successful execution of our strategy to expand our businesses into new directions; (8) our ability to successfully introduce new products; (9) our ability to achieve and capitalize on changes in market demand; (10) acceptance of, and demand for, our products; (11) our ability to maintain supplier relationships; and (12) those factors discussed under “Trends and Uncertainties” elsewhere in this Quarterly Report on Form 10-Q. Our forward-looking statements are not guarantees of future performance. We disclaim any obligation to update information in any forward-looking statement. 

Business Description

Quantum Corporation (“Quantum”, the “Company”, “us” or “we”) (NYSE:DSS), founded in 1980, is a global leader in storage, delivering reliable backup, recovery and archive solutions that meet demanding requirements for data integrity and availability with superior price performance and comprehensive service and support. We are the world's largest supplier of half-inch cartridge tape drives. our DLTtapeÒ Technology is standard for tape backup, recovery, and archive business-critical data for the mid-range enterprise. We offer the broadest portfolio of tape autoloaders and libraries and are one of the pioneers in the disk-based backup market, providing solutions that emulate a tape library but  are optimized for backup and recovery.

In October 2004, we announced a definitive agreement (the “Agreement”) to acquire Certance Holdings. (“Certance”), a privately held company headquartered in Costa Mesa, California. Certance is a supplier of tape backup drives and data protection solutions. Under the terms of the Agreement, stockholders of Certance will receive $60 million in cash. The transaction is subject to customary closing conditions, including regulatory review, and is expected to close in our third fiscal quarter.

Previously, Quantum was also in the hard disk drive business, which operated as Quantum’s Hard Disk Drive group (“HDD”). This business was acquired by Maxtor Corporation (“Maxtor”) on April 2, 2001.

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Business Summary

Quantum has two data storage business segments: the DLTtapeÒ  business and the Storage Systems business. Our DLTtapeÒ  business consists of tape drive and tape media cartridge product lines. Our Storage Systems business consists of tape automation systems and service and includes disk-based backup systems.

While continuing to develop and introduce new products in the storage market, we have also continued to take steps to reduce costs in order to return to profitability. In recent years and in the first six months of fiscal year 2005, our business has experienced declining total revenues, lower gross margins and operating losses. The factors driving these trends included, among other things, increased competition from other computer equipment manufacturers and the generally weak economic conditions that persisted between 2000 and 2002, and to a lesser extent in 2003, which resulted in generally lower prices and unit sales because of reduced customer spending on Information Technology (“IT”). Because of the long-term impact of these trends and the reduced corporate infrastructure that we required following the disposition of HDD to Maxtor at the beginning of fiscal year 2002, which represented a major corporate realignment for Quantum, we have taken numerous cost reduction actions in recent years and in the first six months of fiscal year 2005. Spending on IT has increased in recent quarters, and this has benefited our business. However, the overall impact of the negative trends has not been fully reversed or offset, and we incurred further costs for cost reduction steps and had operating losses in the first six months of fiscal year 2005. The cost reduction steps we are taking are aimed at eventually returning Quantum to profitability on a consistent basis.

DLTtapeÒ

In our DLTtapeÒ business, we design, develop, license, service, and market tape drives, which include DLTtapeÒ and Super DLTtapeÒ drives, as well as tape media cartridges, which include DLTtapeÒ and Super DLTtapeÒ media cartridges.  Our DLTtapeÒ drives are targeted at the “value” or “price sensitive” segment of the tape drive market. Our Super DLTtapeÒ drives are targeted at the “performance sensitive” segment of the tape drive market. We earn approximately 60% of our revenue by selling tape drives and the tape media cartridges used by tape drives.   Most of our media revenue from royalties is paid to us by manufacturers who license our tape media cartridge technology. Super DLTtapeÒ Technology has a higher storage capacity and transfer rate than DLTtapeÒ technology. Both DLTtapeÒ and Super DLTtapeÒ products are used to back up large amounts of data stored on network servers. DLTtapeÒ and Super DLTtapeÒ are based on our half-inch Digital Linear Tape technology that is used in mid-range UNIX and NT system backup and archive applications. 

DLTtapeÒ and Super DLTtapeÒ drives store data on DLTtapeÒ and Super DLTtapeÒ media cartridges, respectively. Historical use of tape drives has shown that drives use many tape media cartridges per year in archival and backup processes. This historical use suggests that the installed base of tape drives will result in continued demand for tape media cartridges. Our tape media cartridges are manufactured and sold by licensed third party manufacturers and, to a minor extent, directly by us.

We receive a royalty on tape media cartridges sold by our licensees. We prefer that a substantial portion of our tape media cartridge sales occur through this license model because this minimizes our operational risks, asset investments and expenses and provides an efficient distribution channel. In the first quarter of fiscal year 2005, approximately 91% of our tape media cartridge unit sales occurred through this license model. We believe that the large installed base of tape drives and our licensing of tape media cartridges are of strategic importance to us because they contribute to both our direct sales of tape media cartridges and also provide us with royalty income from our licensing partners. Media royalties have been a significant source of our gross margins, operating income and cash flow, and this trend is expected to continue.

As of the end of first quarter of fiscal year 2005, substantially all of Quantum’s tape drive manufacturing has been outsourced. The manufacturing of tape drives was outsourced to Jabil Circuit Inc. (“Jabil”) in fiscal year 2003, under an agreement dated August 29, 2002.

Storage Systems

In our Storage Systems business, we design, develop, manufacture, market and sell tape automation systems, disk-based backup systems and related service and support. Our tape automation systems, including tape libraries and autoloaders, serve the entire mid-range tape library data storage market from desktop computers to enterprise-class computers. We offer a broad line of tape automation systems, which are used to manage, store and transfer data in enterprise networked computing environments. Our disk-based backup systems include Enhanced Backup Systems.

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Products

Our products include:

	DLTtapeÒ business:
	Quantum’s DLTtapeÒ business offers tape drive products and tape media cartridges based on DLTtapeÒ Technology, which are targeted to serve workgroup, mid-range and enterprise business needs.
	•	SDLTTMtape drives
		The SDLT Series includes drives that have native capacities of up to 300 gigabytes (GB) (600 GB compressed) and transfer rates of up to 36 megabytes (MB) per second (72 MB compressed). The SDLT 600 drive uses new Super DLTtapeÒ II media cartridges and can back-read cartridges written on the DLTÒ VS160 drive and the SDLT 320 drive. The SDLT 600 also incorporates DLTSageTM, which is a new architecture-based suite of predictive and preventive maintenance diagnostic tools that enable users to more simply manage tape storage environments. The DLTSage architecture is built on standards that interface into current storage environments. DLTIceTM, delivers additional benefit to the SDLT 600 product by providing WORM (Write Once, Read Many) archival functionality, using standard Super DLTtapeÒ II media cartridges. The SDLT 320 uses Super DLTtapeÒ I media cartridges and can back-read cartridges written on most DLTÒ and DLTÒ VS drives.
	•	DLTÒ VS tape drives
		The Series of DLTÒ VS drives includes tape drives with up to 80 GB of native capacity (160 GB compressed) and sustained data transfer rates of up to 8 MB per second (16 MB compressed). The DLTÒ VS160 drive uses DLTÒ VS1 media cartridges.  The DLTÒ VS80 drive is compatible with DLTtapeÒ IV media cartridges.
	•	Super DLTtapeÒ media cartridges
		The Super DLTtapeÒ media cartridges are designed and formulated specifically for use with SDLT tape drives. The capacity of a Super DLTtapeÒ II media cartridge is up to 300 GB native (600 GB compressed).  The capacity of a Super DLTtapeÒ I media cartridge is up to 160 GB native (320 GB compressed).
	•	DLTtapeÒ media cartridges
		The DLTtapeÒ and DLTtapeÒ VS media cartridges are designed and formulated for use with DLTÒ and DLTÒ VS tape drives. The capacity of these media cartridges is up to 80 GB (160 GB compressed).
	Storage Systems business:
	Quantum Tape Libraries, Autoloaders and disk-based backup systems automatically manage and protect business-critical data in network environments. Our modular solutions maximize customer investment with simple-to-manage systems for workgroup, departmental, mid-range, and enterprise-class applications. Our automated systems are fully compatible with major hardware platforms and are supported by nearly 30 popular data management software applications including popular packages such as VERITAS NetBackup, VERITAS BackupExec, Legato NetWorker, Computer Associates BrightStor, CommVault Galaxy, and IBM Tivoli. Our Storage Systems products are divided into the following two categories to reflect different go-to-market business models.
	•	High-Volume Products
	High-volume products are sold mainly through third party distributors, value-added resellers and Original Equipment Manufacturers (“OEMs”), and include the ValueLoader™, the SuperLoader™ and the M-Series family of tape libraries featuring the M1500, M1800 and M2500. ValueLoader The ValueLoader is designed for the desktop or standard 19 inch rack and uses a single DLT VS80, DLT VS160, SDLT320, LTO-1 or LTO-2 tape drive with an eight-cartridge capacity and provides up to 1.6TB of data storage and 108 GB/hour throughput.
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	SuperLoader The SuperLoader tape library is a scalable tape autoloader that provides up to 3.2 terabytes (TB) of capacity and 108GB/hour throughput in a 2U (U is a standard of measure, 1.75” high) rack-mount form factor and is a modular, high-density tape automation solution designed for the workgroup environment. It contains one or two removable active magazines and is available with up to 16 cartridges and a bar code reader for high performance inventory management. The SuperLoader supports a single DLT1, SDLT320, LTO-1 or LTO-2 tape drive and comes standard with on-board web-based remote management. M-Series Libraries Completing our high-volume line is the M-Series family of tape libraries. The M1500, M1800 and M2500 are modular automation systems which customers can integrate together as their storage needs grow. The M1500 is a modular library that is rack mountable and available in increments of one or two drives and 21 (DLT and Super DLT) or 25 (LTO) cartridges. The M1800 has double the performance and capacity of the M1500 and can accommodate up to four drives and 50 cartridges. The M2500 supports up to 6 drives and 84 cartridges and can be combined with the M1500 and/or M1800 to provide customers with scalability and investment protection. The M-Series now supports the SDLT600 tape drives for a capacity of 25.2TB and 777GB/hour throughput in a single M2500. The M-Series libraries easily scale up to 20 drives and 250 cartridges.
	•	Enterprise Products
	Enterprise products are sold mainly through value-added resellers, OEMs, and to direct accounts. These products require a higher level of customer engagement to complete a more complex Storage Systems sale and include the P-Series libraries and our DX-Series Enhanced Backup Systems. P-Series Libraries Quantum’s newest tape library is the PX720, our fifth generation enterprise tape automation platform developed by Quantum. Accommodating up to 20 SCSI or native Fibre Channel tape drives and up to 726 LTO/642 SDLT cartridges in a single chassis, the PX720 provides more than 2.5TB/hour of native throughput performance and 193TB native capacity. The PX720 includes fully redundant power and cooling, proactive component-level monitoring, remote library management, programmable load ports as standard offerings, on-site installation and a one year on-site warranty. Multiple PX720s can be linked together to provide up to 100 drives and up to 3,560 LTO/3,150 SDLT slots, for a total native capacity of 945 TB. The P4000 and the P7000 feature Prism Library Architecture™ are storage solutions for the enterprise data center. The 4000 scales to 322 data cartridges and 10 tape drives, providing up to 97TB of native capacity and 1.3TB/hour native throughput performance. The P7000 scales up to 679 data cartridges and 16 tape drives, providing up to 204TB native capacity and 2.1TB/hour native performance. Multiple P-Series libraries can be linked together to form a single library system providing up to 718TB capacity and 10.1TB/hour native performance. DX-Series Enhanced Backup Systems The DX-Series Enhanced Backup Systems (DX30 and DX100) emulate a tape library and seamlessly integrate into existing backup environments without changes to policies or procedures.  Supported by every major backup software vendor, the DX-Series provides user definable virtual tape drives and cartridges to meet data center requirements. Designed specifically for extremely fast and reliable backup and restore operations, the DX-Series architecture includes redundant and hot-swappable components that deliver up to 64TB (raw) capacity and up to 2TB/hr performance.  A Web-based Graphical User Interface (GUI) provides system management along with event monitoring and notification.  The DX-Series complements tape libraries by allowing them to be dedicated to archive operations.
	•	StorageCare Services
	StorageCare™ services are a group of services that support Quantum products from purchase through product life. StorageCare services include product installation and integration, warranty support, spare part sales, and on-site service agreements.

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For more information about our products, please visit our website at www.quantum.com.  The contents of our website are not incorporated into this Form 10-Q.

CRITICAL ACCOUNTING POLICIES

Our discussion and analysis of the financial condition and results of operations is based on the accompanying Condensed Consolidated Financial Statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these statements requires us to make significant estimates and judgments about future uncertainties that affect reported assets, liabilities, revenues and expenses and related disclosures. We base our estimates on historical experience and on various other assumptions believed to be reasonable under the circumstances. Our reported financial position or results of operations may be materially different under different conditions or when using different estimates and assumptions. In the event that estimates or assumptions prove to be different from actual results, adjustments are made in subsequent periods to reflect more current information.  We believe that the following accounting policies require our most difficult, subjective or complex judgments because of the need to make estimates about the effect of matters that are inherently uncertain. The judgments and uncertainties that affect the application of those policies in particular could result in materially different amounts being reported under different conditions or using different assumptions.

Revenue Recognition

Revenue from sales of products to OEMs and distributors is recognized: when passage of title and risk of ownership are transferred to customers; when persuasive evidence of an arrangement exists; when the price to the buyer is fixed or determinable; and when collection is reasonably assured.  In the period when the revenue is recognized for either OEMs or distributors, allowances are provided for estimated future price adjustments, such as volume rebates, price protection, and future product returns. Since we have historically been able to reliably estimate the amount of allowances required for future price adjustments and product returns, we recognize revenue, net of projected allowances, upon shipment to our customers.

These allowances are based on the OEMs’ and distributors’ master agreements, programs in existence at the time the revenue is recognized, historical information, contractual limits and plans regarding price adjustments and product returns. Revenue from distributor arrangements is a significant portion of our total revenue. If we were unable to reliably estimate the amount of future price adjustments and product returns in any specific reporting period, then we would be required to defer recognition of the revenue until the right to future price adjustments and product returns lapsed and we were no longer under any obligation to reduce the price or accept the return of the product.

Royalty revenue is recognized based on actual licensee sales when such sales incorporate technology licensed from Quantum. Revenue from separately priced extended warranty and product service contracts is initially deferred and recognized as revenue ratably over the contract period.

When elements such as hardware and services are contained in a single arrangement, or in related arrangements with the same customer, we allocate revenue to the separate elements based on relative fair value provided we have fair value for all elements of the arrangement. If in an arrangement we have fair value for undelivered elements but not the delivered element, we defer the fair value of the undelivered elements and the residual revenue is allocated to the delivered elements.  Undelivered elements typically include installation and services.  If fair value does not exist for undelivered elements, then revenue for the entire arrangement is deferred until all elements have been delivered.

Warranty expense and liability

We generally warrant our products against defects for 12 to 39 months. A provision for estimated future costs and estimated returns for credit relating to warranty claims is recorded when products are shipped and revenue recognized. Our estimate of future costs to satisfy warranty obligations is primarily based on our estimates of future failure rates and our estimates of future costs of repair including materials consumed in the repair, and labor and overhead amounts necessary to perform the repair.

The estimates of future product failure rates are based on both historical product failure data and anticipated future failure rates. If future actual failure rates differ from our estimates, we will record the impact in subsequent periods. Similarly, the estimates of future costs of repair are based on both historical data and anticipated future costs. If future actual costs to repair were to differ significantly from our estimates, we would record the impact of these unforeseen costs or cost reductions in subsequent periods.

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Inventory Valuation

We value our inventories that are held for resale to customers at the lower of cost or market. Cost is determined by the first-in, first-out (“FIFO”) method and includes direct material, direct labor, factory overhead and other direct costs. Market is “net realizable value”, which, for finished goods and goods in process, is the estimated selling price, less costs to complete and dispose of the inventory. For raw materials, it is replacement cost or the cost of acquiring similar products from our vendors. While cost is readily determinable, estimates of market value involve significant estimates and judgments about the future.

We initially record our inventory at cost and each quarter evaluate the difference, if any, between cost and market. The determination of the market value of inventories is primarily dependent on estimates of future demand for our products, which in turn is based on other market estimates such as technological change, competitor actions and estimates of future selling prices.

We record write-downs for the amount that cost of inventory exceeds our estimated market value. No adjustment is required when market value exceeds cost.

Service Inventories

We value our service inventories at the lower of cost or market. Service inventories consist of both component parts, which are primarily used to repair defective units, and finished units, which are provided for customer use permanently or on a temporary basis while the defective unit is being repaired. Cost is determined by the FIFO method and includes direct material, direct labor, overhead and other direct costs. Market is “net realizable value”, which, for components, is replacement cost or the cost of acquiring similar products from our vendors. For finished goods, market value is the estimated selling price less costs to complete and dispose of the inventories. While cost is readily determinable, the estimates of market involve significant estimates and judgments about the future.

We carry service inventories because we generally provide product warranty for 12 to 39 months and earn revenue by providing enhanced warranty and repair service outside this warranty period. We initially record our service inventories at cost and each quarter evaluate the difference, if any, between cost and market. The determination of the market value of service inventories is dependent on estimates, including the estimated amount of component parts expected to be consumed in the future warranty and out of warranty service, the estimated number of units required to meet future customer needs, the estimated selling prices of the finished units, and the estimated useful lives of finished units.

We record write-downs for the amount that cost of service inventories exceeds our estimated market value. No adjustment is required when market value exceeds cost.

Goodwill and Intangible Assets

We have a significant amount of goodwill and intangible assets on our balance sheet related to acquisitions. As of September 26, 2004, the net amount of $97.8 million of goodwill and intangible assets represented 14% of total assets.

As a result of adopting SFAS No. 142 Goodwill and Other Intangible Assets on April 1, 2002, we discontinued the amortization of goodwill. Instead, goodwill was reviewed for impairment upon adoption of SFAS No. 142 and is reviewed annually thereafter, or more frequently when indicators of impairment are present.

Intangible assets are carried and reported at acquisition cost, net of accumulated amortization subsequent to acquisition. The acquisition cost is amortized over the estimated useful lives, which range from 2 to 10 years. Intangible assets are reviewed for impairment whenever events or circumstances indicate impairment might exist, or at least annually, in accordance with SFAS No. 144 Accounting for the Impairment or Disposal of Long-lived Assets. Projected undiscounted net cash flows expected to be derived from the use of those assets are compared to the respective net carrying amounts to determine whether any impairment exists. Impairment, if any, is based on the excess of the carrying amount over the fair value of those assets. 

The determination of the net carrying value of goodwill and intangible assets and the extent to which, if any, there is impairment are dependent on material estimates and judgments on our part, including the useful life over which the intangible assets are to be amortized, and the estimates of the value of future net cash flows, which are based upon further estimates of future revenues, expenses and operating margins.

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Special Charges

In recent periods and over the past several years, we recorded significant special charges related to the realignment and restructuring of our business operations. These charges represent expenses incurred in connection with cost reduction programs that we have undertaken and consist of the cost of involuntary termination benefits, separation benefits, stock compensation charges, facilities charges and other costs of exiting activities or geographies.

The charges for severance and exit costs require the use of estimates, primarily related to the number of employees paid severance, the amount of severance and related benefits to be paid, and the cost of exiting facilities, including estimates and assumptions related to future maintenance costs, our ability to secure a sub-tenant, if applicable, and any sublease income to be received in the future.

In the fourth quarter of fiscal year 2003, we became subject to SFAS No. 146 Accounting for Costs Associated with Exit or Disposal Activities, which superseded the Emerging Issues Task Force (“EITF”) Issue No. 94-3 Liability Recognition for Certain Employee Termination Benefits and Other Costs to Exit an Activity (including Certain Costs Incurred in a Restructuring). SFAS No. 146 requires that a liability for a cost associated with an exit or disposal activity be recognized when the liability is incurred rather than at the date of an entity’s commitment to an exit plan. The statement further establishes fair value as the objective for initial measurement of the liability and that employee benefit arrangements requiring future service beyond a “minimum retention period” be recognized over the future service period. Under SFAS No. 146, if we fail to make accurate estimates regarding these costs or to accurately estimate the timing of the completion of planned activities, we may be required to record additional expenses or expense reductions in the future.

Severance charges may be accounted for SFAS No. 112 Employers’ Accounting for Postemployment Benefits since we currently have a benefit plan with defined termination benefits based on years of service.

Income Taxes

We account for income taxes in accordance with SFAS No. 109 Accounting for Income Taxes, which requires that deferred tax assets and liabilities be recognized for the effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes.  SFAS No. 109 also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax asset will not be realized.

We have provided a full valuation allowance against its U.S. net deferred tax assets due to our history of net losses, difficulty in predicting future results and belief that we cannot rely on projections of future taxable income to realize the deferred tax assets.

Significant management judgment is required in determining our deferred tax assets and liabilities and valuation allowances for purposes of assessing our ability to realize any future benefit from our net deferred tax assets. We intend to maintain this valuation allowance until sufficient positive evidence exists to support the reversal of the valuation allowance. Future income tax expense will be reduced to the extent that we have sufficient positive evidence to support a reversal of, or decrease in, our valuation allowance.

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RESULTS OF OPERATIONS

Revenue

(In thousands)	Three Months Ended				Increase / (decrease)			% Increase/ decrease
	September 26, 2004		September 28, 2003
Tape drives	$	65,611	$	81,780	$	(16,169	)	-19.8	%
Tape media		16,038		16,234		(196	)	-1.2	%
Tape royalty		26,459		32,233		(5,774	)	-17.9	%
DLTtapeÒ		108,108		130,247		(22,139	)	-17.0	%
Storage Systems		71,937		64,628		7,309		11.3	%
	$	180,045	$	194,875	$	(14,830	)	-7.6	%
(In thousands)	Six Months Ended				Increase / (decrease)			% Increase/ decrease
	September 26, 2004		September 28, 2003
Tape drives	$	127,327	$	163,724	$	(36,397	)	-22.2	%
Tape media		29,349		35,526		(6,177	)	-17.4	%
Tape royalty		56,761		67,260		(10,499	)	-15.6	%
DLTtapeÒ		213,437		266,510		(53,073	)	-19.9	%
Storage Systems		139,292		130,580		8,712		6.7	%
	$	352,729	$	397,090	$	(44,361	)	-11.2	%

DLTtapeÒ  Revenue

The decrease in tape drive revenue in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year primarily reflected lower unit sales. The decline in unit sales reflected lower unit shipments of older tape drives reaching end of life status, partially offset by increased unit shipments of latest generation Super DLTÒ  and VS drives.  This reflected intense competition, less demand from our key OEM customers, and that the customer qualifications and the corresponding product sales ramp for the latest generation Super DLTÒ  drive, the Super DLTÒ  600, have taken longer than we had anticipated.

The decline in media royalties and Quantum-branded media revenue reflects the increased competition and lower tape drive unit sales in recent years.  As such, the decrease in tape drive unit sales caused a corresponding decline in media unit sales as our tape drives consume and create demand for media. Together with lower media prices, this has resulted in declining royalties because the royalties are based on a combination of our licensees’ media pricing and unit sales.

The decrease in tape media revenue in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year primarily reflected a decrease in our average unit prices for media in order to remain competitive.

The decrease in tape media royalty revenue in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year reflected a combination of lower licensee unit shipments and lower unit prices. The $5.8 million of lower royalties for second quarter of fiscal year 2005 was primarily impacted by the licensees’ comparatively lower unit sales, whereas the $4.7 million of lower royalties for first quarter of fiscal year 2005 was primarily impacted by the licensees’ lower unit prices.

Storage Systems Revenue

The increase in revenue in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year primarily reflected an increase in sales of our autoloader products (ValueLoaders and SuperLoaders) and corresponding service. Increased sale of our latest generation enterprise class tape library, the PX720, was largely offset by reductions in sales of older generation enterprise tape libraries.

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Gross Margin and Gross Margin Rate

(In thousands)	Three Months Ended						Increase / (decrease)
	September 26,   2004			September 28, 2003
DLTtape® gross margin	$	36,330		$	43,344		$	(7,014	)
Storage Systems gross margin		15,659			14,813			846
Quantum gross margin	$	51,989		$	58,157		$	(6,168	)
DLTtape® gross margin rate		33.6	%		33.3	%		0.3	%
Storage Systems gross margin rate		21.8	%		22.9	%		-1.1	%
Quantum gross margin rate		28.9	%		29.8	%		-1.0	%
(In thousands)	Six Months Ended						Increase / (decrease)
	September 26,   2004			September 28, 2003
DLTtape® gross margin	$	74,067		$	90,619		$	(16,552	)
Storage Systems gross margin		35,970			31,051			4,919
Quantum gross margin	$	110,037		$	121,670		$	(11,633	)
DLTtape® gross margin rate		34.7	%		34.0	%		0.7	%
Storage Systems gross margin rate		25.8	%		23.8	%		2.0	%
Quantum gross margin rate		31.2	%		30.6	%		0.6	%

DLTtape® Segment Gross Margin Rate

The increase in gross margin rate in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year reflected a mix shift toward newer generation products that provide higher margins. The margins for newer generation products have benefited from the reductions in our infrastructure costs that we have achieved through outsourcing of manufacturing and other downsizing activities. 

Storage Systems Segment Gross Margin Rate

Although gross margin amounts have increased in both the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year, the gross margin rates have trended lower in the three months ended September 26, 2004. The increase in gross margin amounts reflected higher sales, whereas the lower margin rates reflected a higher mix of autoloader product sales but with corresponding declining prices and margin rates. The gross margin rate in the first half of fiscal year 2005 benefited from higher margins in the first quarter of the fiscal year.

Operating Expenses

(In thousands)	Three Months Ended
	September 26,   2004		% of Segment Revenue	September 28, 2003		% of Segment Revenue	Increase / (decrease)			Change as a % of Segment Revenue
DLTtape®	$	29,305	27.1%	$	35,462	27.2%	$	(6,157	)	-0.1	%
Storage Systems		25,098	34.9%		28,466	44.0%		(3,368	)	-9.1	%
Subtotal	$	54,403	30.2%	$	63,928	32.8%	$	(9,525	)	-2.6	%
Special Charges		3,176			3,100			76
Total	$	57,579		$	67,028		$	(9,449	)
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(In thousands)	Six Months Ended
	September 26,   2004		% of Segment Revenue	September 28, 2003		% of Segment Revenue	Increase / (decrease)			Change as a % of Segment Revenue
DLTtape®	$	60,153	28.2%	$	71,615	26.9%	$	(11,462	)	1.3	%
Storage Systems		52,013	37.3%		57,606	44.1%		(5,593	)	-6.8	%
Subtotal	$	112,166	31.8%	$	129,221	32.5%	$	(17,055	)	-0.7	%
Special Charges		9,586			3,576			6,010
Total	$	121,752		$	132,797		$	(11,045	)

Research and Development Expenses

(In thousands)	Three Months Ended
	September 26, 2004		% of Segment Revenue		September 28, 2003		% of Segment Revenue		Increase / (decrease)			Change as a % of Segment Revenue
DLTtape®	$	14,249	13.2	%	$	17,731	13.6	%	$	(3,482	)	-0.4	%
Storage Systems		7,364	10.2	%		8,465	13.1	%		(1,101	)	-2.9	%
Total	$	21,613	12.0	%	$	26,196	13.4	%	$	(4,583	)	-1.4	%
(In thousands)	Six Months Ended
	September 26, 2004		% of Segment Revenue		September 28, 2003		% of Segment Revenue		Increase / (decrease)			Change as a % of Segment Revenue
DLTtape®	$	29,031	13.6	%	$	35,386	13.3	%	$	(6,355	)	0.3	%
Storage Systems		15,511	11.1	%		17,741	13.6	%		(2,230	)	-2.5	%
Total	$	44,542	12.6	%	$	53,127	13.4	%	$	(8,585	)	-0.8	%

DLTtape® Research and Development Expenses

The decrease in research and development expenses in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year mostly reflected reduced salary and other costs as a result of cost reduction actions.  The increase in research and development expenses as a percentage of revenue reflected lower DLTtape® revenue.

Storage Systems Research and Development Expenses

The decrease in research and development expenses in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year mostly reflected reduced salary and other costs as a result of cost reduction actions. The decrease in research and development expenses as a percentage of revenue reflected lower expenses and higher Storage Systems revenue.

Sales and Marketing Expenses

(In thousands)	Three Months Ended
	September 26, 2004		% of Segment Revenue		September 28, 2003		% of Segment Revenue		Increase/ (decrease)			Change as a % of Segment Revenue
DLTtape®	$	7,405	6.8	%	$	9,556	7.3	%	$	(2,151	)	-0.5	%
Storage Systems		13,599	18.9	%		15,245	23.6	%		(1,646	)	-4.7	%
Total	$	21,004	11.7	%	$	24,801	12.7	%	$	(3,797	)	-1.0	%
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(In thousands)	Six Months Ended
	September 26, 2004		% of Segment Revenue		September 28, 2003		% of Segment Revenue		Increase/ (decrease)			Change as a % of Segment Revenue
DLTtape®	$	16,335	7.7	%	$	18,852	7.1	%	$	(2,517	)	0.6	%
Storage Systems		28,083	20.2	%		30,120	23.1	%		(2,037	)	-2.9	%
Total	$	44,418	12.6	%	$	48,972	12.3	%	$	(4,554	)	0.3	%

DLTtape®  Sales and Marketing Expenses

The decrease in sales and marketing expenses in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year mainly reflected lower salary and other marketing expenses as a result of cost reduction actions.  Although total sales and marketing expenses have trended down moderately, the increases in sales and marketing expenses as a percentage of revenue reflected lower revenue without a proportional reduction in sales and marketing expenses.

Storage Systems Sales and Marketing Expenses

The decrease in sales and marketing expenses in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year reflected various lower costs as a result of cost reduction actions.  The decrease in sales and marketing expenses as a percentage of revenue in the first and second quarters of fiscal year 2005 also reflected higher revenue.

General and Administrative Expenses

(In thousands)	Three Months Ended
	September 26, 2004		% of Segment Revenue		September 28, 2003		% of Segment Revenue		Increase/ (decrease			Change as a % of Segment Revenue
DLTtape®	$	7,651	7.1	%	$	8,175	6.3	%	$	(524	)	0.8	%
Storage Systems		4,135	5.7	%		4,756	7.4	%		(621	)	-1.7	%
Total	$	11,786	6.5	%	$	12,931	6.6	%	$	(1,145	)	-0.1	%
(In thousands)	Six Months Ended
	September 26, 2004		% of Segment Revenue		September 28, 2003		% of Segment Revenue		Increase/ (decrease			Change as a % of Segment Revenue
DLTtape®	$	14,787	6.9	%	$	17,377	6.5	%	$	(2,590	)	0.4	%
Storage Systems		8,419	6.0	%		9,745	7.5	%		(1,326	)	-1.5	%
Total	$	23,206	6.6	%	$	27,122	6.8	%	$	(3,916	)	-0.2	%

The decrease in general and administrative expenses as a percentage of revenue reflects a proportionally larger decreases in expenses as compared to the decline in revenue.

DLTtape®  General and Administrative Expenses

The decrease in general and administrative expenses in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year reflected the impact of cost reduction actions which included reduced headcount.

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Storage Systems General and Administrative Expenses

The decrease in general and administrative expenses in the three and six months ended September 26, 2004 as compared to the corresponding periods of the previous fiscal year resulted from the impact of cost reduction actions which included reduced headcount.

Special Charges

The steps we have taken to return to profitability and right-size our company following our decline in revenue and the sale of the HDD business have resulted in numerous special charges.  Special charges included the cost of major restructuring steps such as the outsourcing of certain functions and consolidation of many functions within the company.  Although these steps have largely been completed as of September 26, 2004 and most of the associated costs have been recorded, we expect to incur additional charges in the future related to additional cost reduction steps and, particularly if estimated costs associated with facilities and other restructured activities are higher than estimated.  The costs that we will incur associated with future cost reduction activities are not estimable at this time.

The following two tables show the special charges for the six months ended September 26, 2004 and the estimated timing of future payouts for cost reduction plans (for a discussion of our special charge activity in prior years, refer to Note 6 in our Annual Report on Form 10-K for the year ended March 31, 2004):

(In thousands)	Severance Costs			Facilities			Other			Total
Balance at March 31, 2004	$	2,617		$	4,647		$	—		$	7,264
DLTtape®  special charges		2,958			—			—			2,958
Storage Systems special charges		2,537			855			60			3,452
Cash payments		(3,891	)		(910	)		(60	)		(4,861	)
Non-cash charges		(29	)		—			—			(29	)
Balance at June 27, 2004	$	4,192		$	4,592		$	—		$	8,784
DLTtape®  special charges		2,603			—			—			2,603
Storage Systems special charges		718			—			—			718
Cash payments		(1,993	)		(755	)		—			(2,748	)
Reclassification from accrued liabilities		234			—			—			234
Special charge reversal		(100	)		(45	)		—			(145	)
Balance at September 26, 2004	$	5,654		$	3,792		$	—		$	9,446
Estimated timing of future payouts:
Fiscal Year 2005	$	5,654		$	1,952		$	—		$	7,606
Fiscal Year 2006 to 2008		—			1,840			—			1,840
	$	5,654		$	3,792		$	—		$	9,446

In the six months remaining in fiscal year 2005 as compared to the corresponding period in fiscal year 2004, we expect to realize annual cost savings of approximately $12 million from various restructuring programs in the six months ended September 26, 2004.  Of this $12 million, approximately $1 million of the savings is expected to reflect reduced cost of revenue and the remaining savings reflect reduced operating expenses.  The anticipated savings result primarily from employee headcount reductions and reduced facility costs. However, many factors, including reduced sales volume and price reductions, which have impacted gross margins in the past, and the addition of, or increase in, other operating costs, may offset some or all of these anticipated savings.

For more information regarding Special Charges, refer to Note 5 “Special Charges” to the Condensed Consolidated Financial Statements.

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Amortization of Intangible Assets

The following table details intangibles asset amortization expense by classification within our Condensed Consolidated Statements of Operations:

(In thousands)	Three Months Ended
					Increase /
	September 26, 2004		September 28, 2003		(decrease)
Cost of revenue	$	2,975	$	2,974	$	1
Research and development		398		426		(28	)
Sales and marketing		874		1,314		(439	)
General and administrative		125		126		(1	)
	$	4,372	$	4,840	$	(467	)
(In thousands)	Six Months Ended
					Increase /
	September 26, 2004		September 28, 2003		(decrease)
Cost of revenue	$	5,950	$	5,948	$	2
Research and development		796		853		(57	)
Sales and marketing		1,749		2,628		(878	)
General and administrative		250		252		(2	)
	$	8,745	$	9,681	$	(935	)

For further information regarding amortization of intangible assets, refer to Note 4 “Goodwill and Intangible Assets” to the Condensed Consolidated Financial Statements.

Interest and Other Income, net

(In thousands)	Three Months Ended						Six Months Ended
	September 26, 2004				September 28, 2003		September 26, 2004			September 28, 2003
Interest and other income	$	2,651		$	2,913		$	4,114		$	5,046
Interest expense		(2,774	)		(5,399	)		(5,551	)		(11,554	)
	$	(123	)	$	(2,486	)	$	(1,437	)	$	(6,508	)
Loss on debt extinguishment	$	—		$	(2,565	)	$	—		$	(2,565	)

The decrease in interest expense mainly reflected reduced interest expense following the redemption of the $287.5 million 7% convertible subordinated notes (“7% Notes”) and issuance of $160.0 million of convertible notes at a lower rate of 4.375% in the second quarter of fiscal year 2004. As a result of this redemption, interest income and other also decreased because Maxtor had been paying us interest for its one-third portion of the 7% Notes prior to their redemption.  Maxtor has no obligation associated with our 4.375% convertible notes issued following the redemption of the 7% Notes.

The decrease in interest income and other, net, was mainly a result of lower cash balances, lower interest rates and reduced interest payments from Maxtor.  The decrease in interest income was partially offset by the gain on sales of an equity investment for $1.2 million.

Income Taxes

We account for income taxes in accordance with SFAS No. 109 Accounting for Income Taxes, which requires that deferred tax assets and liabilities be recognized for the effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. SFAS No. 109 also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax asset will not be realized.

The tax expense recorded for the three months ended September 26, 2004 and September 28, 2003 was $0.4 million and $24.2 million, respectively.  The current quarter’s tax provision reflects local foreign income taxes and state taxes.  The tax expense recorded for the six months ended September 26, 2004 and September 28, 2003 was $3.2 million and $27.3 million, respectively.  The tax expense for the periods prior to the second quarter of fiscal year 2005 reflected foreign withholding taxes, in addition to local foreign income taxes, and state taxes.  The prior year provision also reflected a $21.3 million charge to provide a valuation allowance against our net deferred tax assets.  The new Japan-US treaty became effective on July 1, 2004, the beginning of the Company’s second quarter of fiscal year 2005, and eliminated withholding

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taxes on royalty income.  As a result, our income tax expense has decreased significantly in the second quarter of fiscal year 2005.

We have provided a full valuation allowance against our U.S. net deferred tax assets due to our history of net losses, difficulty in predicting future results, and belief that we cannot rely on projections of future taxable income to realize the deferred tax assets.

Significant management judgment is required in determining our deferred tax assets and liabilities and valuation allowances for purposes of assessing our ability to realize any future benefit from our net deferred tax assets. We intend to maintain this valuation allowance until sufficient positive evidence exists to support the reversal of the valuation allowance. Future income tax expense will be reduced to the extent that we have sufficient positive evidence to support a reversal of, or decrease in, our valuation allowance.

RECENT ACCOUNTING PRONOUNCEMENTS

See Note 16 “Recent Accounting Pronouncements” to the Condensed Consolidated Financial Statements for a full description of recent accounting pronouncements including the respective expected dates of adoption and effects on our results of operations and financial condition.

LIQUIDITY AND CAPITAL RESOURCES

	As of or for Six Months Ended
(In thousands)	September 26, 2004		September 28, 2003
Cash and cash equivalents	$	284,434	$	156,433
Short-term investments	$	5,000	$	116,358
Days sales outstanding (DSO)		51.4		52.8
Inventory turns		10.4		8.4
Net cash provided by (used in) operating activities	$	18,150	$	(5,538	)
Net cash provided by (used in) investing activities	$	49,277	$	(26,372	)
Net cash provided by (used in) financing activities	$	2,400	$	(33,391	)

Net cash provided by or (used in) operating activities:

Net cash provided by or used in operating activities had two primary sources:

• Income (loss) from operations adjusted for non cash items

• Changes in the assets and the liabilities that constitute working capital, including accounts receivable, inventory, accounts payable, other assets, and other liabilities.

(In thousands)	Six Months Ended						Change
	September 26, 2004			September 28, 2003
Cash provided by (used in):
Loss from operations	$	(16,332	)	$	(47,454	)	$	31,122
Non-cash income statement items:
Depreciation and amortization		20,379			24,454			(3,715	)
Compensation related to stock incentive plans		505			259			246
Deferred income taxes		—			21,279			(21,279	)
Impairment of former manufacturing facility		—			2,335			(2,335	)
Subtotal		4,912			873			4,039
Changes in assets and liabilities		13,238			(6,411	)		19,649
Net cash provided by (used in) operating activities	$	18,150		$	(5,538	)	$	23,688

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Cash used in paying down accounts payable reflected the impact of lower levels of operating expenses, which in turn result in lower accounts payable associated with these expenses. Cash provided by accounts receivable was primarily due to lower revenue levels causing lower replenishment of collected accounts receivable and improved DSO with fewer days of sales outstanding. The improvement to DSO resulted from a combination of the negotiation of shorter payment terms from certain business partners and our focus on accounts receivable cash collections.

Net cash provided by or (used in) investing activities:

Cash provided by investing activities during the six months ended September 26, 2004 was from the following:

• net sale of short-term investments

• purchases of property and equipment

• proceeds from sale of Malaysian facility

• proceeds from sale of equity investment.

Cash used in investing activities during the six months ended September 28, 2003 was primarily from net purchases of short-term investments and our purchases of property and equipment.

Net cash provided by or (used in) financing activities:

Cash used in the financing activities of operations in the six months ended September 26, 2004 related to proceeds from the exercise of employee stock options and employee stock purchase plan, partially offset by the principal payments on short-term debt.

Cash provided by the financing activities operations in the six months ended September 28, 2003 was from the following:

• receipt of payment on receivable from Maxtor Corporation

• settlement of 7% convertible subordinated notes

• issuance of 4.375% convertible subordinated notes, net of commissions and expense

• proceeds from the exercise of employee stock options.

Credit lines

In December 2002, we entered into a secured senior credit facility with a group of banks, providing us with a $100.0 million revolving credit line and a $50.0 million synthetic lease that contains the same financial covenants as the revolving credit line. In March 2004, we amended the secured senior credit facility to extend the maturity through March 2006 and adjusted several covenant requirements.  As of September 26, 2004, $90.3 million of this revolving credit line was committed to standby letters of credit, of which $50.0 million secured our obligation to the lessor under our synthetic lease (see below and Note 13 “Commitments and Contingencies”). Borrowings under the revolving credit line bear interest at either the London interbank offering rate (LIBOR) with option periods of one to nine months or a base rate, plus a margin determined by a leverage ratio. The credit facility is secured by a blanket lien on all of the assets of Quantum and contains certain financial and reporting covenants, which we were required to satisfy as a condition of the credit line. In a number of quarters of fiscal years 2004 and 2003, we violated certain financial covenants under this credit agreement and received waivers or amendments for such violations. There is also a cross default provision between this facility and the synthetic lease facility such that a default on one facility constitutes a default on the other facility. As of September 26, 2004, we were in compliance with all of the credit line covenants.

Synthetic Lease Commitment

As described in Note 13 “Commitments and Contingencies,” we have a synthetic lease commitment accounted for as an operating lease in accordance with SFAS No. 13 Accounting for Leases, which required us to maintain specified financial and reporting covenants. We originally entered into this agreement in August 1997 and renegotiated its terms in December 2002 and March 2004. There is a cross default provision between this facility and the credit line facility (refer to Note 9 “Credit Agreements, Short-Term Debt and Convertible Subordinated Debt”) such that a default on one facility constitutes a default on the other facility. In a number of quarters of fiscal years 2004 and 2003 we violated certain financial covenants under this agreement and received waivers or amendments for such violations. As described in greater detail in Note 13 “Commitments and Contingencies,” at the end of the term of the lease we must either renew the lease, purchase the facility for the stipulated sales price of approximately $50.0 million, or find a third party to purchase the facility (in a third party

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sale we would guarantee any shortfall below the stipulated sales price up to a maximum amount of $43.9 million payable by us).

General Outlook

Although revenue declined and we were unprofitable in the first six months of fiscal year 2005, we made progress in reducing operating costs, and we will continue to focus on increasing revenue, reducing costs, and improving margins in an effort to return to consistent profitability and to generate positive cash flows from operating activities.

We believe that our existing cash and capital resources will be sufficient to meet all currently planned expenditures and sustain operations for the next 12 months. This belief is generally dependent upon our ability to maintain revenue around or above current levels, to maintain or improve gross margins, and to reduce operating expenses in order to provide net income and positive cash flow from operating activities in the future. This belief also assumes we will not be forced to make any significant cash payments or otherwise be impacted by restrictions of available cash associated with our existing letters of credit, our credit facility or our synthetic lease.  Should any of the above beliefs prove incorrect, either in combination or individually, it would likely have a material negative effect on our cash balances and capital resources.  We have a significant product transition underway in 3 product areas.  To the extent this product migration results in current product revenue reductions that are not offset by increases in revenues from our new products, or to the extent revenues come in below current expectations for competitive or any other reasons, our quarterly or annual net income and cash flow results would be adversely affected.

Generation of net income and positive cash flow from operating activities in a consistent and sustained manner has historically been an important source of our cash to fund operating needs and, prospectively, will be required for us to fund our business and to meet our current and long-term obligations. We have taken many actions to offset both the negative impact of lower revenue and increased competition in our market segments as well as the long-term negative effects of the economic downturn between 2000 and 2002. We cannot provide assurance that the actions we have taken in the past or any actions we may take in the future will ensure a consistent, sustainable and sufficient level of net income and positive cash flow from operating activities to fund, sustain or grow our businesses. Certain events that are beyond our control, including prevailing economic, competitive, and industry conditions, as well as various legal and other disputes, may prevent us from achieving these required financial objectives. Any inability to achieve consistent and sustainable net income and cash flow profiles could result in:

(i)	Restrictions on our ability to manage or fund our existing business operations, which could result in significant deterioration in our future results of operations and financial condition.
(ii)	Unwillingness on the part of our bank group partners who provide our credit line and synthetic lease (together, the “credit facilities”) to either:
	•	Renew our credit line facility prior to or at its expiration which is March 30, 2006;
	•	Provide a waiver or amendment for any covenant violations we may experience in future periods, thereby triggering a default and/or termination under both the credit line and the synthetic lease; or
	•	Approve any other amendments we might seek to obtain in order to improve our business. Any lack of renewal, or waiver or amendment, if needed, could result in the credit line becoming unavailable to us and any amounts outstanding becoming immediately due and payable. In the case of our secured senior credit facility, this would mean the loss of our remaining standby letters of credit totaling $40.3 million.  In the case of our synthetic lease, this would mean the acceleration of our obligation to purchase the leased facilities for the stipulated sales price of $50.0 million. This may result in our having to immediately purchase the land and buildings underlying the lease for cash or find a third party to purchase them, potentially at a substantial discount to their appraised value. Quantum would guarantee any shortfall below the $50.0 million stipulated sales price up to a maximum of $43.9 million payable by us. Any requirement to pay off either or both of these two items would substantially restrict or reduce cash available to us.
(iii)	Consistent, continued losses would further impair our financial flexibility and could require that we raise additional funding in the capital markets sooner than we otherwise would, and on terms less favorable to us, if available at all.

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Any of the above mentioned items, individually or in combination, would have a material and adverse effect on our results of operations, available cash and cash flows, financial condition, access to capital and liquidity.

In October 2004, we signed a definitive agreement (the “Agreement”) to acquire Certance Holdings (“Certance”) for $60 million, a privately held company headquartered in Costa Mesa, California. Certance is a supplier of tape backup drives and data protection solutions. Under the terms of the Agreement, the total consideration payable by us upon consummation of the acquisition shall be approximately $60,000,000, of which approximately $36 million will be paid on the closing date and approximately $18 million will be paid on or before the four month anniversary of the closing date.  In addition, $5,800,000 will be held back and retained by us and subsequently deposited into escrow on the eight month anniversary of the closing date, as security for certain indemnity obligations of the Certance equityholders under the Agreement.

Capital Resources

On July 30, 2003, we issued 4.375% convertible subordinated notes in aggregate principal amount of $160 million due in 2010, in a private placement transaction. The notes are unsecured obligations subordinated in right of payment to all of our existing and future senior indebtedness. The notes mature on August 1, 2010 and are convertible at the option of the holders at any time prior to maturity into an aggregate of 36.8 million shares of Quantum common stock at a conversion price of $4.35 per share. We cannot redeem the notes prior to August 5, 2008. We received net proceeds from the notes of $155.1 million after deducting commissions and expenses. We used the net proceeds from the sale of these notes, plus cash received from Maxtor for their responsibility to us for a one-third portion of the debt and a portion of our available cash, to redeem our $287.5 million 7% convertible subordinated notes due 2004. The portion of our available cash used in the redemption was $37 million.

The purchase agreement for the acquisition of M4 Data in April 2001 included additional contingent consideration to be paid annually from 2002 through 2005 based on future revenues, which will result in additional debentures being issued. We expect that debentures issued in the future under the earn out provisions of the acquisition agreement will be approximately $2 million.

As of September 26, 2004, there was approximately $87.9 million remaining on our authorization to repurchase Quantum common stock. No stock repurchases were made during the first quarter of the fiscal year 2005. Our ability to repurchase common stock was restricted under our credit facilities.

The table below summarizes our commitments as of September 26, 2004:

(In thousands)	< 1 year		1 year and < 2 years		2 years and <3 years		3 years and beyond		Total
Convertible subordinated debt	$	–	$	–	$	–	$	160,000	$	160,000
Inventory purchase commitment		36,446		–		–		–		36,446
Operating lease-Colorado facility-
- contingent obligation (1)		–		–		–		50,000		50,000
Other operating leases		6,609		9,765		5,135		12,273		33,782
Total contractual cash obligations	$	43,055	$	9,765	$	5,135	$	222,273	$	280,228
(1) Appraised value of the facility, the collateral that would be used to satisfy the contingent obligation, was $50 million.

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RISK FACTORS

THE READER SHOULD CAREFULLY CONSIDER THE RISKS DESCRIBED BELOW, TOGETHER WITH ALL OF THE OTHER INFORMATION INCLUDED IN THIS QUARTERLY REPORT ON FORM 10-Q, BEFORE MAKING AN INVESTMENT DECISION. THE RISKS AND UNCERTAINTIES DESCRIBED BELOW ARE NOT THE ONLY ONES FACING QUANTUM. ADDITIONAL RISKS AND UNCERTAINTIES NOT PRESENTLY KNOWN TO US OR THAT ARE CURRENTLY DEEMED IMMATERIAL MAY ALSO IMPAIR OUR BUSINESS AND OPERATIONS. THIS QUARTERLY REPORT ON FORM 10-Q CONTAINS “FORWARD-LOOKING” STATEMENTS THAT INVOLVE RISKS AND UNCERTAINTIES. PLEASE SEE PAGE 18 OF THIS REPORT FOR ADDITIONAL DISCUSSION OF THESE FORWARD-LOOKING STATEMENTS. 

A large percentage of our sales come from a few customers, and these customers have no minimum or long-term purchase commitments. The loss of, or a significant change in demand from, one or more key customers could materially and adversely affect our business, financial condition and operating results.

Our sales have been concentrated among a few customers. Sales to our top five customers in the first six months of fiscal year 2005 represented 52% of total revenue. These sales concentrations do not include revenues from sales of our media that were sold directly to our top five customers by our licensees, for which we earn royalty revenue, or revenues from sales of our tape drives incorporated into tape libraries sold to our top five customers by our customers. Furthermore, customers are not obligated to purchase any minimum product volume and our relationships with our customers are terminable at will.

The merger of Hewlett-Packard and Compaq during calendar year 2002 significantly increased the concentration of our sales and dependency on a single customer. In the first half of fiscal year 2005 approximately 23% of our revenue was derived from this merged entity, and, therefore, we could be materially and adversely affected if Hewlett-Packard were to experience a significant decline in storage revenue whether due to customer loss or otherwise. There is an additional risk since the combined entity owns a competing linear tape open, or LTO, brand of tape drive and media. Hewlett-Packard markets both the LTO and Super DLTtapeÒ platforms, whereas Compaq had exclusively marketed Super DLTtapeÒ for tape backup and archiving. To the extent that the combined Hewlett-Packard and Compaq entity significantly reduces its purchases of DLTtapeÒ and Super DLTtapeÒ products in favor of LTO products, our tape drive and media revenues, operating results and financial condition would be materially and adversely affected.

If any of our other top five customers were to significantly reduce, cancel or delay their orders from us, our results of operations could be materially adversely affected.

Our operating results depend on new product introductions, which may not be successful, in which case, our business, financial condition and operating results may be materially and adversely affected.

To compete effectively, we must continually improve existing products and introduce new ones, such as our recently introduced latest generations of SDLT tape drive, tape automation and the DX-Series Enhanced Backup Systems. We have devoted and expect to continue to devote considerable management and financial resources to these efforts. We cannot provide assurance that:

• We will introduce new products in the time frame we are forecasting;

• We will not experience technical, quality, performance-related or other difficulties that could prevent or delay the introduction of, and market acceptance of, new products;

• Our new products will achieve market acceptance and significant market share, or that the markets for these products will continue or grow as we have anticipated;

• Our new products will be successfully or timely qualified with our customers by meeting customer performance and quality specifications because a successful and timely customer qualification must occur before customers will place large product orders; or

• We will achieve high volume production of these new products in a timely manner, if at all.

For example, the qualification of out latest Super DLTtapeÒ drive, the SDLT600 has progressed slower than we had anticipated. If we are not successful in completing the qualification of the SDLT600 and then ramping sales to our key customers, our revenue and results of operations would be adversely impacted.

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We have experienced a downward trend in tape media and tape royalty revenues, primarily caused by year-over-year declines in Quantum branded tape media unit sales, and more recently, declines in media prices, which has had a negative effect on our profits and cash flow. If this trend were to continue or worsen, our business, financial condition and operating results may be even further materially and adversely affected.

Our royalty and media revenues are dependent on many factors, including the following factors:

• The pricing actions of other media suppliers;

• The size of the installed base of tape drives that use our tape cartridges;

• The performance of our strategic licensing partners, which sell our tape media cartridges;

• The relative growth in units of Super DLTtapeÒ drives, the media cartridges for which sell at a higher price than DLTtapeÒ cartridges;

• The media consumption habits and rates of end users;

• The pattern of tape drive retirements; and

• The level of channel inventories.

Competition from other tape technologies has had a significant negative impact on our income from media as well as on our sales of tape drives. Similarly, competition among media suppliers has periodically resulted in intense, price-based competition for media sales, most recently in the first half of fiscal year 2004, also affecting media income.  If either of these competitive factors continues or intensifies, it would further erode tape drive unit sales, tape drive installed base, media units and media pricing. Since our Quantum branded media revenue and media royalties are dependent upon media pricing and the quantity of media consumed by the installed base of our tape drives, reduced media prices, or a reduced installed tape drive base, would result in further reductions in our Quantum branded media and media royalty revenue. This would materially and adversely affect our business, financial condition and results of operations.

We do not control licensee pricing or licensee sales of tape media cartridges. To the extent that our royalty revenue is dependent on the prices of cartridges sold by our licensees, should these licensees significantly lower prices on the media products that they sell, such reduced pricing would lower our royalty revenue, which would materially and adversely affect our business, financial condition and operating results.

We receive a royalty fee based on sales of tape media cartridges by Fuji, Maxell, Imation and Sony Corporation (“Sony”). Under our license agreements with these companies, each of the licensees determines the pricing and number of units of tape media cartridges that it sells. To the extent that our royalty revenue is based on the prices of cartridges sold by our licensees, our royalty revenue will vary depending on the level of sales and prices set by the licensees. In addition, lower prices set by licensees could require us to lower our prices on direct sales of tape media cartridges, which would reduce our revenue and margins on this product. As a result, lower prices on our tape media cartridges would reduce media revenue, which could materially and adversely affect our business, financial condition and operating results.

In October 2004, we entered into a definitive agreement to acquire Certance, and the failure to successfully integrate this acquisition could harm our business, financial condition and operating results.

As a part of our business strategy, we have in the past and expect in the future to make acquisitions, or significant investments in, complementary companies, products or technologies. For instance, in October 2004, we entered into a definitive agreement to acquire Certance Holdings.  If we fail to successfully integrate this acquisition, it could harm our business, financial condition and operating results.  Risks that we may face in our efforts to integrate Certance, or any future acquisitions include, among others:

• Difficulties in assimilating and retaining employees;

• Potential incompatibility of business cultures;

• Diversion of management’s attention from ongoing business concerns;

• Coordinating infrastructure operations in a rapid and efficient manner;

• The potential inability to maximize our financial and strategic position through the successful incorporation of acquired technology and rights into our products and services;

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• Failure to realize anticipated synergies and benefits from the acquisition;

• Insufficient revenues to offset increased expenses associated with the acquisition;

• Costs and delays in implementing common systems and procedures and costs and delays caused by communication difficulties;

• Reduction or loss of customer orders due to the potential for market confusion, hesitation and delay;

• Impairment of existing customer, supplier and strategic relationships of either company, such as Certance’s relationship with the Linear Tape Open (LTO) consortium;

• Difficulties in entering markets in which we have no or limited direct prior experience and where competitors in such markets have stronger market positions;

• The possibility that we may not receive a favorable return on our investment, the original investment may become impaired, and/or we may incur losses from these investments;

• Dissatisfaction or performance problems with the acquired company;

• The assumption of risks of the acquired company that are difficult to quantify, such as litigation;

• The cost associated with the acquisition; and

• Assumption of unknown liabilities or other unanticipated adverse events or circumstances.

We cannot provide assurance that we will be able to successfully integrate Certance, or any business, products, technologies or personnel that we may acquire in the future, and our failure to do so could harm our business, financial condition and operating results.

Quantum and Certance may be unable to obtain the regulatory approvals required to complete the acquisition or, in order to do so, the combined company may be required to comply with material restrictions or conditions.

The acquisition is subject to review by the Antitrust Division of the United States Department of Justice (DOJ) and the United States Federal Trade Commission (FTC) under the Hart−Scott−Rodino Antitrust Improvements Act of 1976, as amended (the HSR Act). We are required to make filings under the HSR Act, and the statutory waiting period thereunder must expire or be terminated prior to completing the acquisition.  We may receive a request for additional information and other documentary material from the DOJ or the FTC under the HSR Act, which could extend the waiting period for the acquisition.  In addition, the acquisition may be subject to review by the governmental authorities of other jurisdictions.  Any delay in the completion of the acquisition could diminish the anticipated benefits of the acquisition or result in additional transaction costs, loss of revenue or other effects associated with uncertainty about the transaction.  The reviewing authorities may not permit the acquisition at all or may impose restrictions or conditions on the acquisition that could harm the combined company if the acquisition is completed.

We have outsourced most of our manufacturing to Jabil and to other third party contract manufacturers. If we cannot obtain our products and parts from these third parties in a cost effective and timely manner that meets our customers’ expectations, this could materially and adversely impact our business, financial condition and results of operations.

We outsourced tape drive manufacturing to Jabil during the third quarter of fiscal year 2003.  We face a number of risks as a result of our decision to outsource manufacturing to Jabil, including, among others:

	•	Sole source of product supply.  Jabil is our sole source of supply for our tape drives and certain tape automation products. Because we are relying on one supplier, we are at greater risk of experiencing component shortages or other delays in customer deliveries that could result in customer dissatisfaction and lost sales, which could materially damage customer relationships and result in lost revenue.
	•	Cost and purchase commitments.  We may not be able to control the costs we would be required to pay Jabil for the products they manufacture for us. Jabil procures inventory to build our products based upon a forecast of customer demand that we provide. We would be responsible for the financial impact on Jabil of any reduction or product mix shift in the forecast relative to materials that Jabil had already purchased under a prior forecast. Such a variance in forecasted demand could require us to pay Jabil for finished goods in excess of current customer demand or for excess or obsolete inventory and generally incur higher costs. As a result, we could experience reduced gross margins and larger operating losses based on these purchase commitments.
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	•	Quality.  We will have limited control over the quality of products produced by Jabil. Therefore, the quality of the products may not be acceptable to our customers and could result in customer dissatisfaction, lost revenue, and increased warranty costs.

In addition to Jabil, we have outsourced substantially all of our manufacturing to other contract manufacturers. We face the same risks in relation to these arrangements as those set forth above, in particular the risks of component shortages or other delays in customer deliveries that could result in customer dissatisfaction and lost sales, increased costs for products manufactured for us and the risk that the quality of the products may not be acceptable to us or to our customers, any or all of which could have a material adverse effect on our business.

Competition has increased, and may increasingly intensify, in the tape drive and tape automation markets as a result of competitors introducing competing products based on new technology standards, which could materially and adversely affect our business, financial condition and results of operations.

We compete with companies that develop, manufacture, market and sell tape drive and tape automation products. Our principal competitors include Hewlett-Packard, IBM, Sony, Advanced Digital Information Corporation (“ADIC”), Overland Data Inc. and StorageTek. These competitors are aggressively trying to advance and develop new technologies to compete more successfully with products based on DLTtapeÒ and Super DLTtapeÒ technology. Hewlett-Packard, IBM and Certance (U.S.) Holdings (or Certance (formerly known as Seagate Technology (U.S.) Holdings) formed a consortium to develop and have developed LTO products. These products target the high-capacity data backup market and compete with our products based on Super DLTtapeÒ technology. This competition has resulted in a trend, which is expected to continue, toward lower prices and lower margins earned on our DLTtapeÒ and Super DLTtapeÒ drives and media. The lower demand resulting from the adverse economic conditions experienced in fiscal years 2002 and 2003 had resulted in lower demand in the tape drive and tape automation markets in general, which has also resulted in increased ongoing price competition even as economic conditions have improved. In addition, the merger between Hewlett-Packard and Compaq has resulted in a larger competitor in the tape drive and tape automation markets with greater resources and a potentially greater market reach with a product that competes directly with our Super DLTtapeÒ drives and Super DLTtapeÒ media. These factors, when combined with the current environment of intense competition, which has resulted in reduced shipments of our tape drive products, could result in a further reduction in our prices, volumes and margins, which could materially and adversely impact our business, financial condition and results of operations.

Our tape automation products compete with product offerings of Advanced Digital Information Corporation, Overland Data Inc. and StorageTek, which offer tape automation systems incorporating DLTtapeÒ and Super DLTtapeÒ technology as well as new linear tape technology. Increased competition has resulted in increased price competition. If this trend continues or worsens and/or if competition further intensifies, our sales and gross margins could decline, which could materially and adversely affect our business, financial condition and results of operations.

We derive almost all of our revenue from products incorporating tape technology. If competition from alternative storage technologies continues or increases, our business, financial condition and operating results would be materially and adversely harmed.

We derive almost all of our revenue from products that incorporate some form of tape technology and we expect to continue to derive a substantial majority of our revenue from these products for the foreseeable future. As a result, our future operating results depend on the continued market acceptance of products employing tape drive technology. Our tape products, including tape drives and automation systems, compete with other storage technologies, such as hard disk drives. Hard disk drives have experienced a trend toward lower prices while capacity and performance have increased. If products incorporating other technologies gain comparable or superior market acceptance, or their costs decline far more rapidly than tape drive and media costs, the competition resulting from these alternative technologies would increase as customers turn toward those alternative technologies with an acceptable price/performance offering relative to tape drives and automation systems. As a result, our business, financial condition and operating results would be materially and adversely affected.

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We have taken considerable steps towards reducing our cost structure and anticipate taking further such actions. The steps we have taken and anticipate taking may not reduce our cost structure to a level appropriate in relation to our future sales and therefore these anticipated cost reductions may be inadequate compared to our future sales.

We have recorded significant restructuring charges and cash payments in order to reduce our cost of sales and operating expenses in response to adverse economic, industry and competitive conditions. We anticipate taking future steps to further reduce our operating costs. These steps and additional possible future restructurings in response to adverse changes in our business and industry may require us to make cash payments that can adversely affect our liquidity if large enough. We may be unable to reduce our cost of sales and operating expenses at a rate and to a level consistent with a future potential adverse sales environment, which may adversely affect our business, financial condition and operating results.

We have made and may continue to make significant changes to our infrastructure and management, including consolidating or eliminating systems and functions and reducing the number of employees supporting functions. If we do not manage the changes that we implement successfully, our business could be disrupted and that could adversely impact our results of operations and financial condition.

Managing change will be an important focus for us and the success of our efforts will depend on, among other things, how well we address issues that arise during the process of changing systems and functions and adapt business processes and software to the requirements of our organization. If we are unable to successfully manage the changes that we implement, it could disrupt our business and adversely impact our results of operations and financial condition.

If we fail to protect our intellectual property or if others use our proprietary technology without authorization, our competitive position may suffer.

Our future success and ability to compete depends in part on our proprietary technology. We rely on a combination of copyright, patent, trademark and trade secrets laws and nondisclosure agreements to establish and protect our proprietary technology. We currently hold 177 United States patents and have 135 United States patent applications pending. However, we cannot provide assurance that patents will be issued with respect to pending or future patent applications that we have filed or plan to file or that our patents will be upheld as valid or will prevent the development of competitive products or that any actions we have taken will adequately protect our intellectual property rights. We generally enter into confidentiality agreements with our employees, consultants, resellers, customers and potential customers, in which we strictly limit access to, and distribution of, our software, and further limit the disclosure and use of our proprietary information. Despite our efforts to protect our proprietary rights, unauthorized parties may attempt to copy or otherwise obtain or use our products or technology. Our competitors may also independently develop technologies that are substantially equivalent or superior to our technology. In addition, the laws of some foreign countries do not protect our proprietary rights to the same extent as the laws of the United States.

Third party infringement claims could result in substantial liability and significant costs, and, as a result, our business, financial condition and operating results may be materially and adversely affected.

From time to time, third parties allege our infringement of and need for a license under their patented or other proprietary technology. For instance, see Note 12 “Litigation” to the Condensed Consolidated Financial Statements for a description of StorageTek’s patent infringement suit against us. While we currently believe the amount of ultimate liability, if any, with respect to these actions will not materially affect our financial position, results of operations, or liquidity, the ultimate outcome of any litigation is uncertain. Adverse resolution of any third party infringement claim could subject us to substantial liabilities and require us to refrain from manufacturing and selling certain products. In addition, the costs incurred in intellectual property litigation can be substantial, regardless of the outcome. As a result, our business, financial condition and operating results may be materially and adversely affected.

We are exposed to general economic conditions that have continued to result in significantly reduced sales levels and significant operating losses and, if such adverse economic conditions were to continue or worsen, our business, financial condition and operating results could be further adversely and materially impacted.

If the adverse economic conditions in the United States and throughout the world economy continue or worsen, we may experience a further material adverse impact on our business, operating results, and financial condition. We took actions in

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fiscal year 2002 through the first half of fiscal year 2005 to reduce our cost of sales and operating expenses in order to address these adverse conditions.  A prolonged continuation or worsening of sales trends would require us to take additional actions to further reduce our cost of sales and operating expenses in subsequent quarters in order to align these costs with reduced revenue. We may be unable to reduce our cost of sales and operating expenses at a rate and to a level consistent with such a future adverse sales environment.  If we are required to undertake further expense reductions, we may incur significant additional incremental special charges associated with such expense reductions that are disproportionate to sales, thereby materially and adversely affecting our business, financial condition and operating results.

We are currently not profitable on a GAAP basis. If we remain unprofitable and are unable to generate positive cash flow from operating activities, our ability to service our debt and fund our other business requirements, as well as obtain additional capital in the future, could be jeopardized and our business could suffer.

Our ability to meet our debt service obligations and to fund working capital, capital expenditures, acquisitions, research and development and other general corporate needs will depend upon our future financial performance, which will be subject to financial, business and other factors affecting our operations, many of which are beyond our control. If our losses from operations were to persist at current levels or worsen, we may not have sufficient cash resources to service our debt and maintain access to our credit facilities. We cannot provide assurance that we will generate sufficient cash flow from operations, or that future borrowings or equity financing will be available on commercially reasonable terms or at all, or available in an amount sufficient to enable us to pay our debt or fund other liquidity needs. If we are unable to generate sufficient cash flow and/or are unable to service our outstanding debt obligations, we may have to reduce or delay capital expenditures planned for replacements, improvements and expansions, and/or sell assets, thereby affecting our ability to remain competitive and adversely affecting our business.

We must devote substantial resources to new product development, manufacturing, and sales and marketing activities to be competitive in our markets. Historically, cash flow from operating activities has provided us with a significant portion of the cash and liquidity that we have required in order to invest in product development, manufacturing and sales activities. Until or unless we return to consistent, profitable GAAP operating results, we will have significantly less liquidity to invest in our business, which could have a material adverse impact on our business, results of operations, liquidity, and financial condition.

Our ability to achieve profitability may be adversely impacted by higher energy prices to the extent that we or our key suppliers experience higher energy costs which we are unable to offset or recover in the form of higher prices for our products and services.

Our Storage Systems business currently operates at a loss and may continue to operate at a loss. If we are unable to make Storage Systems profitable, the losses from this group could materially and adversely affect our business, financial condition and results of operations.

We have invested, and will continue to invest, in the development, promotion and sale of storage solutions. Operating expenses associated with Storage Systems revenue are comparatively high, resulting in losses and cash consumption out of proportion to the revenue generated by the group when compared to our DLTtapeÒ business. Therefore, we will need to generate significant revenues from Storage Systems, including service and product support revenues, or significantly reduce our related operating expenses for the group in order to make Storage Systems profitable. We cannot provide assurance that Storage Systems will ever produce operating income or will ever generate positive cash flow, and, if we are unable to do so, these losses could negatively impact our business, financial condition and operating results.

Goodwill and intangible assets used in Storage Systems have been reviewed at least annually for possible impairment since the adoption on April 1, 2002 of SFAS No. 142 Goodwill and Other Intangible Assets. Although we incurred no goodwill impairment in fiscal year 2004 or the first half of fiscal year 2005, the impairment tests conducted relative to goodwill resulted in a $94.3 million charge upon the adoption of SFAS No. 142 in the first quarter of fiscal year 2003 and a $58.7 million impairment charge in the second quarter of fiscal year 2003. These reviews of goodwill were based on projections of undiscounted and discounted net cash flows from Storage Systems compared to the carrying value of goodwill. The financial projections involved significant estimates with inherent uncertainties regarding future revenues, expenses and cash flows. We cannot provide assurance that future net cash flows will be sufficient to avoid future impairment charges. As a result, in the future, we may incur additional impairment charges related to Storage Systems, which could have a materially adverse impact on the results of our operations or our financial condition.  Although we have not incurred impairment

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charges associated with our other intangible assets, we have substantial intangible asset balances, which are subject to the same risks and uncertainties related to goodwill.

Our credit agreement and synthetic lease contain various covenants that limit our discretion in the operation of our business, which could have an adverse effect on our business, financial condition and results of operations.

Our credit agreement and synthetic lease contain numerous restrictive covenants that require us to comply with and maintain certain financial tests and ratios, thereby restricting our ability to:

• Incur debt;

• Incur liens;

• Redeem or prepay subordinated debt;

• Make acquisitions of businesses or entities or sell certain assets;

• Make investments, including loans, guarantees and advances;

• Make capital expenditures beyond a certain threshold;

• Engage in transactions with affiliates;

• Pay dividends or engage in stock repurchases; and

• Enter into certain restrictive agreements.

Our ability to comply with covenants contained in our credit agreement or our synthetic lease may be affected by events beyond our control, including prevailing economic, financial and industry conditions. Our failure to comply with our debt-related covenants in one agreement could result in an acceleration of our indebtedness and cross-default under the other agreement, which may have a material adverse effect on our liquidity and financial condition. Even if we are able to comply with all covenants, the restrictions on our ability to operate our business could harm our business by, among other things, limiting our ability to take advantage of financings, mergers, acquisitions and other corporate opportunities.

Our credit agreement is secured by a pledge of all of our assets. If we were to default under our credit agreement and were unable to obtain a waiver for such a default, the lenders would have a right to foreclose on our assets in order to satisfy our obligations under the credit agreement. Any such action on the part of the lenders against us could have a materially adverse impact on our business, financial condition and results of operations.

Pursuant to our synthetic lease, we have an obligation for a guaranteed value to the lessor at the end of the lease term, which could result in our being required to make a significant cash payment to the lessor, and if we are required to do so, our business, financial condition and results of operations could be materially and adversely impacted.

We have a synthetic lease for our Colorado Springs facility, which is accounted for as an operating lease in accordance with SFAS No. 13 Accounting for Leases. At the end of the lease term, we may renew the lease, purchase the facility, or cause the facility to be sold to a third party, subject to our obligation to the lessor for the guaranteed value. The proceeds of a sale to a third party would be used to satisfy the $50.0 million obligation to the lessor at the end of the lease term. In the event of sale to a third party, we would be liable for any shortfall between the net proceeds resulting from the sale of the facility and our $50.0 million obligation to the lessor, up to a maximum of $43.9 million. In the event of a default on our obligation to the lessor, we would be liable for the entire $50.0 million. These obligations that would arise from either a sale to a third party or a default could have a material adverse impact on our financial condition and liquidity.

In the past we incurred both a period expense and a cash charge because of a decline in the appraised value of this facility. We have the facility independently appraised on a periodic basis. Any future declines in the appraised value of the facility could result in both a period expense and a cash charge, which could be material and adverse to our financial condition.

Our synthetic lease requires us to maintain specified financial covenants. If we fail to comply with these financial covenants and are unable to obtain a waiver, or amend the lease, for such future non-compliance, it would cause us to default under our credit agreement and synthetic lease and the lessor could terminate the lease, resulting in the acceleration of our obligation to purchase the leased facility at either the full $50.0 million value or the $43.9 million guaranteed value, either of which could have a material adverse effect on our financial condition and liquidity.

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In a number of quarters in fiscal years 2003 and 2004 we violated certain financial covenants under our credit agreement and synthetic lease. If in the future we violate financial covenants, it could materially and adversely impact our financial condition and liquidity.

In December 2002, we terminated a $187.5 million revolving credit facility with a certain group of banks and entered into a new secured senior credit agreement with a group of banks, providing a $100.0 million revolving credit line that was scheduled to expire in June 2004.  In March 2004, we amended the secured senior credit facility to extend the maturity to March 2006 and adjusted several covenant requirements.  As of September 26, 2004, $90.3 million of this credit line was committed to standby letters of credit, of which $50.0 million secured our obligation to the lessor under our synthetic lease. In December 2002, we also entered into a synthetic lease that contained the same financial covenants as our credit agreement. In July 2003, we amended the credit agreement and our synthetic lease to, among other things, change certain financial covenants and events of default and allow for the completed redemption of our 7% Convertible Subordinated Notes due August 2004. In the quarters that we violated covenants, we obtained waivers or amendments.

If our operating results do not improve in the future and we violate any financial or reporting covenant in our credit agreement and receive a notice of default letter from our bank group, our credit line could become unavailable, and any amounts outstanding could become immediately due and payable. If we were unsuccessful in securing a waiver of such violation or an amendment to our credit agreement, we might have to restrict $90.3 million of our cash to cover the outstanding standby letters of credit issued under the credit agreement. This would have a material and adverse impact on our liquidity.

If we violate any financial or reporting covenants in our credit agreement, it would cause a corresponding violation under our synthetic lease. Absent a waiver or an amendment to our synthetic lease, such a violation would be cause for default under that agreement. For more information regarding our synthetic lease please refer to the immediately preceding risk factor.

Without the availability of the credit agreement, we would have to rely on operating cash flows and debt or equity arrangements other than the credit agreement, if such alternative funding arrangements are available to us at all, in order to maintain sufficient liquidity. If we were not able to obtain sufficient cash from our operations or from these alternative funding sources under such circumstances, our operations, financial condition and liquidity would be materially and adversely affected.

Our reliance on a limited number of third party suppliers could result in significantly increased costs and delays in the event these suppliers experience shortages or quality problems, and, as a result, our business, financial condition and operating results may be materially and adversely affected.

We depend on a limited number of suppliers for components and sub-assemblies, including recording heads, media cartridges and integrated circuits, all of which are essential to the manufacture of tape drives and tape automation systems.

We currently purchase the DLTtapeÒ and Super DLTtapeÒ  media cartridges that we sell primarily from Imation, Fuji and Maxell. We cannot provide assurance that Imation, Fuji or Maxell will continue to supply an adequate number of high quality media cartridges in the future. If component shortages occur, or if we experience quality problems with component suppliers, shipments of products could be significantly delayed and/or costs significantly increased, and as a result, our business, financial condition and operating results could be materially and adversely affected. In addition, we qualify only a single source for many components and sub-assemblies, which magnifies the risk of future shortages.

Furthermore, the main supplier of tape heads for our products is located in China. Political instability, trade restrictions, changes in tariff or freight rates, or currency fluctuations in China could result in increased costs and delays in shipment of our products and could materially and adversely impact our business, financial condition and operating results.

Because we rely heavily on distributors and other resellers to market and sell our products, if one or more distributors were to experience a significant deterioration in its financial condition or its relationship with us, this could disrupt the distribution of our products and reduce our revenue, which could materially and adversely affect our business, financial condition and operating results.

In certain product and geographic segments we heavily utilize distributors and value added resellers to perform the functions necessary to market and sell our products. To fulfill this role, the distributor must maintain an acceptable level of 

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financial stability, creditworthiness and the ability to successfully manage business relationships with the customers it serves directly. Under our distributor agreements with these companies, each of the distributors determines the type and amount of our products that it will purchase from us and the pricing of the products that it sells to its customers. If the distributor is unable to perform in an acceptable manner, we may be required to reduce the amount of sales of our product to the distributor or terminate the relationship. We may also incur financial losses for product returns from distributors or for the failure or refusal of distributors to pay obligations owed to us. For instance, on May 7, 2003, Digital Storage, Inc., one of our media distributors, filed for Chapter 11 bankruptcy protection. As a result of this bankruptcy, we recorded a net bad debt charge of $1.4 million in fiscal year 2003. Either scenario could result in fewer of our products being available to the affected market segments, reduced levels of customer satisfaction and/or increased expenses, which could in turn have a material and adverse impact on our business, results of operations and financial condition.

Tax allocations under a tax sharing and indemnity agreement with Maxtor are the subject of a dispute between us and Maxtor. In the event this dispute is not resolved favorably, we could incur significant costs that could have a material adverse effect on our business, financial condition and operating results.

The tax sharing and indemnity agreement between us and Maxtor entered into in connection with the disposition of the Hard Disk Drive  group provided for the allocation of certain liabilities related to taxes. Maxtor and we disagree about the amounts owed by each party under that agreement. The parties are in negotiations to resolve this matter, and no litigation has been initiated to date. However, there can be no assurance that we will be successful in asserting our position. If disputes regarding contested amounts cannot be resolved favorably, we may incur significant liabilities and costs, including litigation costs, as well as costs to settle the related obligations. An unfavorable settlement or litigation outcome could have a material adverse effect on our business, financial condition and operating results.

Maxtor’s failure to perform under the indemnification provisions of a tax sharing and indemnity agreement entered into with us providing for payments to us that relate to tax liabilities, penalties, and interest resulting from the conduct of our business prior to the Hard Disk Drive group disposition date could have a material adverse effect on our business, financial condition and operating results.

Under a tax sharing and indemnity agreement between us and Maxtor entered into in connection with the disposition of the Hard Disk Drive group, Maxtor has agreed to assume responsibility for payments related to certain taxes, penalties, and interest resulting from the conduct of business by the Quantum DLTtapeÒ  and Storage Systems group for all periods before our issuance of tracking stock and the conduct of the Quantum Hard Disk Drive group for all periods before the disposition of the Hard Disk Drive group to Maxtor. If audit adjustments are successfully asserted with respect to such conduct, and if Maxtor fails to indemnify us under this obligation or is not able to pay the reimbursement in full, we would nevertheless be obligated, as the taxpayer, to pay the tax. As a result, we could experience a material adverse effect on our business, financial condition and operating results.

Maxtor’s failure to perform under the agreements in connection with contingent liabilities would harm our business, financial condition and operating results.

We may have contingent liabilities for some obligations assumed by Maxtor in connection with the disposition of HDD, including real estate and litigation, and Maxtor’s failure to perform under these obligations could result in significant costs to us that could have a materially adverse impact on our business, financial condition and operating results.

The disposition of the Hard Disk Drive group may be determined not to be tax-free, which would result in us or our stockholders, or both, incurring a substantial tax liability, which could materially and adversely affect our business, financial condition and results of operations.

Maxtor and Quantum have agreed not to request a ruling from the Internal Revenue Service, or any state tax authority confirming that the structure of the combination of Maxtor with the Hard Disk Drive group will not result in any federal income tax or state income or franchise tax to Quantum or the previous holders of the Hard Disk Drive common stock. Instead, Maxtor and we have agreed to effect the disposition and the merger on the basis of an opinion from Ernst & Young LLP, our tax advisor, and a tax opinion insurance policy issued by a syndicate of major insurance companies to us covering up to $340 million of tax loss caused by the disposition and merger.

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If the disposition of the Hard Disk Drive group is determined not to be tax-free and the tax opinion insurance policy does not fully cover the resulting tax liability, we or our stockholders or both could incur substantial tax liability, which could materially and adversely affect our business, financial condition and results of operations.

The tax opinion insurance policy issued in conjunction with the disposition of the Hard Disk Drive group does not cover all circumstances under which the disposition could become taxable to us, and as a result, we could incur an uninsured tax liability, which could materially and adversely affect our business, financial condition and results of operations.

In addition to customary exclusions from its coverage, the tax opinion insurance policy does not cover any federal or state tax payable by us if the disposition becomes taxable to us as a result of:

• A change in relevant tax law;

• An acquisition representing a 50% or greater interest in Quantum which began during the one-year period before and nine-month period following the disposition, whether or not approved by our board of directors; or

• An acquisition representing a 50% or greater interest in Maxtor which began during the one-year period before and nine-month period following the disposition, whether or not approved by Maxtor’s board of directors.

If any of these events occur, we could incur uninsured tax liability, which could materially and adversely affect our business, financial condition and results of operations.

If we incur an uninsured tax liability as a result of the disposition of the Hard Disk Drive group, our financial condition and operating results could be negatively affected.

If the disposition of the Hard Disk Drive group were determined to be taxable to Quantum, we would not be able to recover an amount to cover the tax liability either from Maxtor or under the insurance policy in the following circumstances:

• If the tax loss were not covered by the policy because it fell under one of the exclusions from coverage under the tax opinion insurance policy described above, insurance proceeds would not be available to cover the loss.

• If the tax loss were caused by our own acts or those of a third party that made the disposition taxable (for instance, an acquisition of control of Quantum which began during the one-year period before and nine-month period following the closing), Maxtor would not be obligated to indemnify us for the amount of the tax liability.

• If Maxtor were required to reimburse us for the amount of the tax liability according to its indemnification obligations under the Hard Disk Drive group disposition, but was not able to pay the reimbursement in full, we would nevertheless be obligated, as the taxpayer, to pay the tax.

In any of these circumstances, the tax payments due from us could be substantial. In order to pay the tax, we would have to either deplete our existing cash resources or borrow cash to cover our tax obligation. Our payment of a significant tax prior to payment from Maxtor under Maxtor’s indemnification obligations, or in circumstances where Maxtor has no payment obligation, could harm our business, financial condition and operating results.

Our stock price could become more volatile if certain institutional investors were to increase or decrease the number of shares they own. In addition, there are other factors and events that could affect the trading prices of our common stock.

Three institutional investors own approximately 45% of our common stock. If any or all of these investors were to decide to purchase additional shares or to sell some or all of the Quantum DLTÒ  and Storage Systems shares they currently own, that may cause our stock price to be more volatile.  For example, there have been instances in the past where a shareholder with a significant equity position begins selling shares, putting downward pressure on our stock price for the duration of their selling activity.  In these situations, selling pressure outweighs buying demand and our stock price has declined.

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Trading prices of our common stock may fluctuate in response to a number of other events and factors, such as:

• General economic conditions;

• Changes in interest rates;

• Fluctuations in the stock market in general and market prices for high technology companies in particular;

• Quarterly variations in our operating results;

• New products, services, innovations and strategic developments by our competitors or us, or business combinations and investments by our competitors or us;

• Changes in financial estimates by us or securities analysts and recommendations by securities analysts; and

• Changes in our capital structure, including issuance of additional debt or equity to the public.

Any of these events and factors may cause our stock price to rise or fall and may adversely affect our business and financing opportunities.

Our quarterly operating results could fluctuate significantly, and past quarterly operating results should not be used to predict future performance.

Our quarterly operating results have fluctuated significantly in the past and could fluctuate significantly in the future. As a result, our past quarterly operating results should not be used to predict future performance. Quarterly operating results could be materially and adversely affected by a number of factors, including, but not limited to:

• An inadequate supply of tape media cartridges;

• Customers canceling, reducing, deferring or rescheduling significant orders as a result of excess inventory levels, weak economic conditions or other factors;

• Declines in network server demand;

• Failure to complete shipments in the last month of a quarter during which a substantial portion of our products are typically shipped; or

• Increased competition.

If we fail to meet our projected quarterly results, our business, financial condition and results of operations may be materially and adversely harmed.

A significant portion of our manufacturing and sales operations occurs in foreign locations; we are increasingly exposed to risks associated with conducting our business internationally.  Many of our facilities and those of important customers and suppliers are located near known earthquake fault zones or in geographic areas susceptible to other natural disasters, which could disrupt our business and require us to curtail or cease operations. 

We manufacture and sell our products in a number of different markets throughout the world. As a result of our global manufacturing and sales operations, we are subject to a variety of risks that are unique to businesses with international operations of a similar scope, including the following:

• Adverse movement of foreign currencies against the U.S. dollar, the currency (in which our results are reported);

• Import and export duties and value-added taxes;

• Import and export regulation changes that could erode our profit margins or restrict our exports;

• Potential restrictions on the transfer of funds between countries;

• Inflexible employee contracts in the event of business downturns; and

• The burden and cost of complying with foreign laws.

In addition, our suppliers have operations in several emerging or developing economies that have a potential for higher risk than in the developed markets. The risks associated with these economies include, but are not limited to, political risks and natural disasters, including earthquakes. In particular, with several of our outsourced manufacturers located in Malaysia and the Philippines, a significant portion of our product manufacturing may be subject to such political and climatic risks.

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We are exposed to fluctuations in foreign currency exchange rates and an adverse change in foreign currency exchange rates relative to our position in such currencies could have a materially adverse impact on our business, financial condition and results of operations.

We do not use derivative financial instruments for hedge or speculative purposes. To minimize foreign currency exposure, we use foreign currency obligations to match and offset net currency exposures associated with certain assets and liabilities denominated in non-functional currencies. Corresponding gains and losses on the underlying transaction generally offset the gains and losses on these foreign currency obligations. We have used in the past, and may use in the future, foreign currency forward contracts to hedge our exposure to foreign currency exchange rates. To the extent that we have assets or liabilities denominated in a foreign currency that are inadequately hedged or not hedged at all, we may be subject to foreign currency losses, which could be significant.

Our international operations can act as a natural hedge when both operating expenses and sales are denominated in local currencies. In these instances, although an unfavorable change in the exchange rate of a foreign currency against the U.S. dollar would result in lower sales when translated to U.S. dollars, operating expenses would also be lower in these circumstances. Also, since an insignificant amount of our current sales are denominated in currencies other than the U.S. dollar, we do not believe that our total foreign exchange rate exposure is significant. Nevertheless, an increase in the rate at which a foreign currency is exchanged for U.S. dollars would require more of that particular foreign currency to equal a specified amount of U.S. dollars than before such rate increase. In such cases, and if we were to price our products and services in that particular foreign currency, we would receive fewer U.S. dollars than we would have received prior to such rate increase for the foreign currency. Likewise, if we were to price our products and services in U.S. dollars while competitors priced their products in a local currency, an increase in the relative strength of the U.S. dollar would result in our prices being uncompetitive in those markets. Such fluctuations in currency exchange rates could materially and adversely affect our business, financial condition and results of operations.

We must maintain appropriate levels of service inventories. If we have too little service inventory, we may experience increased levels of customer dissatisfaction. If we have too much service inventory, we may incur financial losses.

We maintain levels of service inventories to satisfy future warranty obligations and also to earn service revenue to repair products for which the warranty has expired. We estimate the required amount of service inventories based on historical usage and forecasts of future warranty requirements, including estimates of failure rates and costs to repair, and out of warranty revenue. Given the significant levels of judgment inherently involved in the process, we cannot provide assurance that we will be able to maintain appropriate levels of service inventories to satisfy customer needs and to avoid financial losses from excess inventory charges. If we are unable to maintain appropriate levels of service inventories, our business, financial condition and results of operations may be materially and adversely impacted.

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Item 3.     Quantitative and Qualitative Disclosures About Market Risk

We are exposed to a variety of risks, including changes in interest rates, foreign currency fluctuations and impairment in equity security values.

Market Interest Rate Risk

Changes in interest rates affect interest income earned on our cash equivalents and short-term investments, and interest expense on short-term and long-term borrowings.

Our cash equivalents and short-term investments consist primarily of short-term fixed income investments and money market funds. The main objective of these investments was safety of principal and liquidity while maximizing return, without significantly increasing risk. A hypothetical 100 basis point parallel decrease in the interest rate curve would result in an approximate $1.6 million annual decrease in interest income.

Our senior credit facilities are comprised of a $100.0 million revolving line of credit expiring in March 2006 and a synthetic lease expiring in December 2007. The obligations under the revolving credit line and synthetic lease bear interest at either London interbank offered rate with option periods of one to nine months or a base rate, plus a margin determined by a leverage ratio. Our outstanding convertible bond was for $160.0 million due 2010 and has a fixed interest rate of 4.375% paid semi-annually in February and August. (refer to Note 9 “Credit Agreements, Short-Term Debt and Convertible Subordinated Debt” to the Condensed Consolidated Financial Statements).

We do not enter into derivative transactions related to our cash equivalents or short-term investments nor for our existing or anticipated liabilities.

Foreign Currency Exchange Rate Risk

As a multinational corporation, we are exposed to changes in foreign exchange rates. These exposures may change over time and could have a material adverse impact on our financial results. Currently, we do not utilize foreign currency forward contracts to manage the risk of exchange rate fluctuations because we believe that we have a natural hedge through our worldwide operating structure. We do not anticipate any material effect on our consolidated financial position utilizing our current hedging strategy.

Item 4.    Controls and Procedures

(a)

Evaluation of disclosure controls and procedures. Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, as of the end of the period covered by this report (the "Evaluation Date"). Based on this evaluation, our principal executive officer and principal financial officer concluded as of the Evaluation Date that our disclosure controls and procedures were effective such that the information relating to Quantum, including our consolidated subsidiaries, required to be disclosed in our Securities and Exchange Commission ("SEC") reports (i) is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and (ii) is accumulated and communicated to Quantum's management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

(b)

Changes in internal controls. There were no significant changes in the Company's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation. There were no significant deficiencies or material weaknesses, and therefore there were no corrective actions taken.

47

QUANTUM CORPORATION

PART II - OTHER INFORMATION

Item 1.	Legal proceedings
	The information contained in Note 12 to the Condensed Consolidated Financial Statements is incorporated into this Part II, Item 1 by reference.
Item 2.	Changes in securitiesand use of proceeds
	None.
Item 3.	Defaults upon senior securities
	None.
Item 4.	Submission of matters to a vote of security holders
	An annual meeting of the stockholders of Quantum was held on September 2, 2004.  The following are the proposals voted upon at the meeting, and the number of votes cast for, against or withheld, as well as the number of abstentions for each such proposal:
	Proposal 1.    Proposal to elect eight (8) directors to serve until the next Annual Meeting of Stockholders or until their successors are elected and qualified.

Name	For	Withheld
Richard E. Belluzzo	161,414,421	5,105,808
Michael A. Brown	160,881,634	5,638,595
Alan L. Earhart	162,764,304	3,755,925
Edward M. Esber, Jr.	152,899,787	13,620,442
Kevin J. Kennedy	156,844,572	9,675,657
Edward J. Sanderson, Jr.	156,853,394	9,666,835
Steven C. Wheelwright	160,952,686	5,567,543
Mary A. Wilderotter	162,629,969	3,890,260

	Proposal 2.    Proposal to ratify the appointment of Ernst & Young LLP as the independent registered public accounting firm of Quantum for the fiscal year ending March 31, 2005.
	For: 164,748,789                   Against: 1,682,002                             Abstained: 89,439
Item 5.	Other information
	Quantum’s independent auditor, Ernst & Young LLP ("E&Y"), has recently advised the Audit Committee of Quantum’s Board of Directors that certain cash handling services performed for Quantum subsidiaries by E&Y affiliates in China, Malaysia and Japan have raised questions regarding E&Y’s independence with respect to its performance of audit services.  These services are not permitted under the auditor independence rules. E&Y has informed the Company and its Audit Committee that it has concluded that the services performed have not impaired its independence with respect to performance of its audit services.  The Company and its Audit Committee have considered the impact the providing of these services may have had on Ernst & Young’s independence with respect to the Company and concluded there has been no impairment of Ernst & Young’s independence. The fees over the period the services were provided (October 1998 through March 2004) totaled approximately $42,000. The services have been discontinued.

48

Item 6.	Exhibits and reports on Form 8-K.
(a)	Exhibits

Exhibit Number		Exhibit
3.1(1)		Amended and Restated Certificate of Incorporation of Registrant
3.2(2)		Amended and Restated By-laws of Registrant, as amended
3.3		Certificate of Amendment of Amended and Restated Bylaws of Registrant, effective September 2, 2004
4.1(3)		Amended and Restated Preferred Shares Rights Agreement between the Registrant and Harris Trust and Savings Bank
4.2(4)		First Amendment to the Amended and Restated Preferred Shares Rights Agreement and Certification Of Compliance With Section 27 Thereof, dated as of October 28, 2002
4.3(4)		Stockholder Agreement, dated as of October 28, 2002, by and between Registrant and Private Capital Management
10.1(5)		Indenture, dated as of July 30, 2003, between the Registrant and U.S. Bank National Association, related to Registrant’s convertible debt securities
10.2(6)		Agreement and Plan of Merger
24		Power of Attorney (see signature page)
31.1		Certification of the Chief Executive Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002
31.2		Certification of the Chief Financial Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002
32.1		Certification of Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002
32.2		Certification of Chief Financial Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002
--------------
1.	Incorporated by reference to Registrant’s Annual Report on Form 10-K for fiscal year ended March 31, 2001 filed with the Securities and Exchange Commission on June 29, 2001.
2.	Incorporated by reference to Registrant’s Annual Report on Form 10-K for fiscal year ended March 31, 2000 filed with the Securities and Exchange Commission on June 28, 2000.
3.	Incorporated by reference to Registrant’s Registration Statement on Form S-4, Amendment No.2, filed with the Securities and Exchange Commission on June 10, 1999.
4.	Incorporated by reference to Registrant’s Form 10-Q for the quarterly period ended September 29, 2002 filed with the Securities and Exchange Commission on November 13, 2002.
5.	Incorporated by reference to Registrant’s Registration Statement on Form S-3 filed with the Securities and Exchange Commission on October 9, 2003.
6.	Incorporated by reference to Registrant’s Form 8-K filed on October 25, 2004.

49

(b)	Reports on Form 8-K
	The Company filed the following Current Reports on Form 8-K during the three months ended September 26, 2004:
	On July 13, 2004, Quantum Corporation filed a Current Report on Form 8-K, to report its preliminary operating results for the first quarter of fiscal year 2005.
	On July 27, 2004, Quantum Corporation filed a Current Report on Form 8-K, to report its operating results for the first quarter of fiscal year 2005.
	On September 1, 2004, Quantum Corporation filed a Current Report on Form 8-K, to report restructuring activity occurring during its fiscal year 2005.
	On September 7, 2004, Quantum Corporation filed a Current Report on Form 8-K, to report an amendment to its Bylaws to decrease the size of the Board of Directors to eight members.

50

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	QUANTUM CORPORATION (Registrant)
Date:  November 3, 2004	By:	/s/ Edward J. Hayes, Jr.
		Edward J. Hayes, Jr. Executive Vice President, Finance     and Chief Financial Officer

51

QUANTUM CORPORATION

EXHIBIT INDEX

Exhibit Number		Exhibit
3.1(1)		Amended and Restated Certificate of Incorporation of Registrant
3.2(2)		Amended and Restated By-laws of Registrant, as amended
3.3		Certificate of Amendment of Amended and Restated Bylaws of Registrant, effective September 2, 2004
4.1(3)		Amended and Restated Preferred Shares Rights Agreement between the Registrant and Harris Trust and Savings Bank
4.2(4)		First Amendment to the Amended and Restated Preferred Shares Rights Agreement and Certification Of Compliance With Section 27 Thereof, dated as of October 28, 2002
4.3(4)		Stockholder Agreement, dated as of October 28, 2002, by and between Registrant and Private Capital Management
10.1(5)		Indenture, dated as of July 30, 2003, between the Registrant and U.S. Bank National Association, related to Registrant’s convertible debt securities
10.2(6)		Agreement and Plan of Merger
24		Power of Attorney (see signature page)
31.1		Certification of the Chief Executive Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002
31.2		Certification of the Chief Financial Officer pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002
32.1		Certification of Chief Executive Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002
32.2		Certification of Chief Financial Officer pursuant to 18 U.S.C. section 1350, as adopted pursuant to section 906 of the Sarbanes-Oxley act of 2002
--------------
1.	Incorporated by reference to Registrant’s Annual Report on Form 10-K for fiscal year ended March 31, 2001 filed with the Securities and Exchange Commission on June 29, 2001.
2.	Incorporated by reference to Registrant’s Annual Report on Form 10-K for fiscal year ended March 31, 2000 filed with the Securities and Exchange Commission on June 28, 2000.
3.	Incorporated by reference to Registrant’s Registration Statement on Form S-4, Amendment No.2, filed with the Securities and Exchange Commission on June 10, 1999.
4.	Incorporated by reference to Registrant’s Form 10-Q for the quarterly period ended September 29, 2002 filed with the Securities and Exchange Commission on November 13, 2002.
5.	Incorporated by reference to Registrant’s Registration Statement on Form S-3 filed with the Securities and Exchange Commission on October 9, 2003.
6.	Incorporated by reference to Registrant’s Form 8-K filed on October 25, 2004.

52

EX-3.3

Exhibit 3.3

CERTIFICATE OF AMENDMENT

OF AMENDED AND RESTATED BYLAWS

OF

QUANTUM CORPORATION

       The undersigned hereby certifies that he is the duly elected, qualified, and acting Secretary of Quantum Corporation, a Delaware corporation (the “Company”), and that, effective September 2, 2004, Section 3.2 of the Bylaws of the Company was amended, by a duly adopted resolution of a majority of the Board of Directors, to read as follows:

       “The Board of Directors shall consist of eight (8) persons.  This may be changed by a duly adopted amendment to the Certificate of Incorporation or by an amendment to this Section 3.2 of these Bylaws adopted by the vote or written consent of the holders of the shares of capital stock entitled to cast a majority of the votes entitled to be cast by holders of all outstanding shares of capital stock entitled to vote or by resolution of a majority of the Board of Directors. 

       No reduction of the authorized number of directors shall have the effect of removing any director before that director’s term of office expires.”

       IN WITNESS WHEREOF, the undersigned has hereunto set his hand this 2nd day of September, 2004.

/s/	Shawn D. Hall
	Shawn D. Hall
	Secretary

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO SECTION 302(a)
OF THE SARBANES-OXLEY ACT OF 2002

I, Richard E. Belluzzo, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Quantum Corporation;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:
	(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	(b) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	(c) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.	The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
	(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
	(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 3, 2004 

/s/	Richard E. Belluzzo
	Richard E. Belluzzo
	Chairman and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO SECTION 302(a)
OF THE SARBANES-OXLEY ACT OF 2002

I, Edward J. Hayes, Jr., certify that:

1.	I have reviewed this quarterly report on Form 10-Q of Quantum Corporation;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and have:
	(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	(b) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	(c) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.	The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
	(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
	(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 3, 2004 

/s/	Edward J. Hayes, Jr.
	Edward J. Hayes, Jr.
	Executive Vice President and Chief
	Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER
PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Richard E. Belluzzo, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Quantum Corporation, on Form 10-Q for the quarterly period ended September 26, 2004 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Quantum Corporation.

Date: November 3, 2004

/s/	Richard E. Belluzzo
	Richard E. Belluzzo
	Chairman and Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER
PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Edward J. Hayes, Jr., certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Quantum Corporation, on Form 10-Q for the quarterly period ended September 26, 2004 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Quantum Corporation.

Date: November 3, 2004

/s/	Edward J. Hayes, Jr.
	Edward J. Hayes, Jr.
	Executive Vice President and Chief
	Financial Officer