quantum_defa14a.htm

SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934 (Amendment No. )

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Quantum Corporation
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(Name of Registrant as Specified In Its Charter)

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*** Exercise Your Right to Vote ***
Important Notice Regarding the Availability of Proxy Materials for the
Shareholder Meeting to Be Held on August 18, 2010.

QUANTUM CORPORATION

QUANTUM CORPORATION
1650 TECHNOLOGY DRIVE
SUITE 800
SAN JOSE, CA 95110


	Meeting Information
	Meeting Type: Annual Meeting
	For holders as of: June 21, 2010
	Date: August 18, 2010 Time: 8:00 AM, PDT
	Location:	QUANTUM CORPORATION Corporate Headquarters 1650 Technology Drive San Jose, CA 95110

You are receiving this communication because you hold shares in the above named company.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain proxy materials and voting instructions.

— Before You Vote —
How to Access the Proxy Materials


	Proxy Materials Available to VIEW or RECEIVE: NOTICE AND PROXY STATEMENT ANNUAL REPORT 10-K COMBO How to View Online: Have the information that is printed in the box marked by the arrow è XXXX XXXX XXXX available (located on the following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL: sendmaterial@proxyvote.com If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow è XXXX XXXX XXXX (located on the following page) in the subject line. Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before August 4, 2010 to facilitate timely delivery.

— How To Vote —
Please Choose One of the Following Voting Methods


	Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow è XXXX XXXX XXXX available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

Voting Items
THE DIRECTORS RECOMMEND A VOTE "FOR" ITEMS 1 AND 2.

1.	Proposal to elect to the Board of Directors.

	01) Paul R. Auvil III	05) Edward M. Esber, Jr.
	02) Richard E. Belluzzo	06) Elizabeth A. Fetter
	03) Michael A. Brown	07) Joseph A. Marengi
	04) Thomas S. Buchsbaum	08) Dennis P. Wolf



2.	Proposal to ratify the appointment of PricewaterhouseCoopers LLP as the independent registered public accounting firm of the Company for the fiscal year ending March 31, 2011.

3.	Proposal to transact such other business as may properly come before the meeting or any adjournment or postponement thereof.