Voting Agreement

This VOTING AGREEMENT (the “Agreement”), dated as of June 1, 2009 is made by and between Vincent C. Smith and Quest Software, Inc. Capitalized terms shall have the meanings attributed to them in Section 1.1.

WHEREAS, on March 5, 2009, the Board of Directors of Quest authorized a Repurchase Program;

WHEREAS, the Board has conditioned its approval of the Repurchase Program on Quest and the Principal Stockholder, entering into a voting agreement with respect to the Subject Shares;

WHEREAS, as of the date hereof, the Principal Stockholder owns, with the right to vote, the Owned Shares; and

NOW THEREFORE, in consideration of the mutual covenants and agreements set forth herein, the parties hereto agree as follows:

(a) “affiliates” of the Principal Stockholder means any person or entity that directly, or indirectly through one of more intermediaries, controls, or is controlled by, or is under common control with, the Principal Stockholder.

(b) “Agreement” shall have the meaning set forth in the first paragraph of this Voting Agreement.

(e) “Company Stockholders’ Meeting” shall have the meaning set forth in Section 2.11(a) hereof.

(f) “Designated Proposal” shall mean any proposal brought to the stockholders for approval other than: (i) proposals relating to a change of control of the Company in which a majority of the then independent and disinterested directors of the Company determine that the Principal Stockholder does not have an interest materially different from other stockholders (other than due to the relative size of his holdings), (ii) proposals brought by third parties that are voted against by a majority of the then independent and disinterested directors of the Company, and (iii) any other proposal that a majority of the then independent and disinterested directors of the Company agrees should be excluded from the requirements of Section 2.1(y).

(g) “Excess Voting Power” means the aggregate percentage voting power represented by the Subject Shares in excess of the Cap Amount that results from the Repurchase Program or any subsequent stock repurchases by the Company. For the avoidance of doubt, any excess voting

power that is attributable to the later acquisition or purchase of securities (other than any acquisition or purchase of securities as a result of stock options, shares of restricted stock or restricted stock units granted to the Principal Stockholder by the Company) shall not be considered Excess Voting Power for purposes of this Agreement.

(h) “Group” shall have the meaning set forth in Section 13(d) of the Exchange Act.

(j) “Owned Shares” means 28,757,603 shares of common stock of the Company, which represent in the aggregate, based on Company share data as of May 26, 2009, approximately 30% of the voting power of the Company’s outstanding shares.

(k) “Principal Stockholder” means Vincent C. Smith, Quest’s executive chairman of the Board.

(l) “Quest” means Quest Software, Inc., a Delaware corporation, and any successor thereof.

(m) “Repurchase Program” means a stock repurchase of $100 million of Quest’s common stock.

(n) “Subject Shares” means Voting Securities that the Principal Stockholder may own or have the power to vote, directly or indirectly, from time to time, it being understood that Voting Securities shall be Subject Shares only during the period they are so owned or controlled.

(o) “Termination Date” means the earlier of (i) the date on which the Company (authorized by not less than a majority vote of the then independent and disinterested directors thereof) and the Principal Stockholder agree to terminate this Agreement, (ii) the later to occur of (A) December 31st of the first year on which the calculation of Excess Voting Power is equal to zero percent and (B) December 31, 2013, (iii) the death of the Principal Stockholder, or (iv) that date which is two years after the Principal Stockholder ceases to be an employee or director of the Company.

(p) “Voting Securities” means securities of the Company having the power generally to vote on the election of directors and other matters submitted to a vote of stockholders of the Company.

SECTION 2.1 Voting Agreement. During the time this Agreement is in effect, at any meeting of the stockholders of the Company, however called, or at any adjournment or postponement thereof (a “Company Stockholders’ Meeting”), or in any other circumstances upon which a vote, consent or other approval (including by written consent) is sought by or from the stockholders of the Company, the Principal Stockholder shall (x) when a Company Stockholders’ Meeting is held, appear at such Company Stockholders’ Meeting or otherwise cause Subject Shares that represent Excess Voting Power to be counted as present thereat for the purpose of establishing a quorum (except to the extent otherwise provided in the immediately succeeding clause (y) with respect to non-affiliated shares which are not counted as present), and (y) for all Designated Proposals cause Subject Shares that represent Excess Voting Power to be treated in the same manner (i.e., not present (and, therefore, not counted as present for quorum purposes), present but abstaining, voting for or voting against), and in proportion to, the votes or actions of all Company stockholders, including the vote or actions of the Principal Stockholder and his

affiliates on the basis, solely for the purpose of determining proportionality, at any such Company Stockholders’ Meeting or under any such other circumstances upon which a vote, consent or other approval (including by written consent) is sought by or from the stockholders of the Company.

(a) As security for the Principal Stockholder’s obligations under Section 2.1, the Principal Stockholder hereby irrevocably constitutes and appoints the Company as his attorney and proxy in accordance with the Delaware General Corporation Law, with full power of substitution and re-substitution, to cause his Subject Shares representing Excess Voting Power to be counted as present at any Company Stockholders’ Meeting (except to the extent otherwise provided in Section 2.1(a)(y) with respect to non-affiliated shares which are not counted as present), to vote his Subject Shares representing Excess Voting Power at any Company Stockholders’ Meeting, and to execute consents in respect of his Subject Shares representing Excess Voting Power as and to the extent provided in Section 2.1. The Principal Stockholder hereby revokes all other proxies and powers of attorney with respect to his Subject Shares representing Excess Voting Power that he may have heretofore appointed or granted, and represents that any proxies heretofore given in respect of his Subject Shares representing Excess Voting Power, if any, are revocable.

(b) The Principal Stockholder hereby affirms that the irrevocable proxy set forth in this Section 2.2 is given in connection with the commencement by the Company of the Repurchase Program, and that such irrevocable proxy is given to induce the Company to so commence the Repurchase Program and to secure the performance of the duties of the Principal Stockholder under this Agreement. The Principal Stockholder hereby further affirms that the irrevocable proxy is coupled with an interest and, except as set forth in this Section 2.2 or in Section 6.1, is intended to be irrevocable in accordance with the provisions of Section 218 of the Delaware General Corporation Law. If for any reason the proxy granted herein is not irrevocable, then the Principal Stockholder shall vote his Subject Shares representing Excess Voting Power in accordance with Section 2.1 above. The parties agree that the foregoing is a voting agreement created under Section 218 of the Delaware General Corporation Law.

(c) This irrevocable proxy shall automatically terminate on the Termination Date. Prior to that date, this irrevocable proxy shall not be terminated by any act of the Principal Stockholder or by operation of law, whether by the death or incapacity of the Principal Stockholder or by the occurrence of any other event or events, it being understood that actions taken by the Company hereunder prior to the Termination Date shall be and remain valid as if such death, incapacity or other event or events had not occurred, regardless of whether or not the Company has received notice of the same.

The Principal Stockholder hereby represents and warrants to the Company as follows:

SECTION 3.1 Authority for this Agreement. The Principal Stockholder has all necessary power and authority to execute and deliver this Agreement and to consummate the transactions contemplated hereby. The execution and delivery of this Agreement by the Principal Stockholder and the consummation by the Principal Stockholder of the transactions contemplated hereby (a) will not violate any order, writ, injunction, decree, statute, rule, regulation or law applicable to the Principal Stockholder or by which any of his Subject Shares are bound, (b) will not violate or constitute a breach or default under any agreement by which the Principal Stockholder or the Subject Shares may be bound, (c) require the consent of or any notice or other filing with any third party, including any governmental authority,

and (d) have been duly and validly authorized, and no other proceedings on the part of the Principal Stockholder are necessary to authorize this Agreement or to consummate the transactions contemplated hereby. There is no beneficiary or holder of a voting trust certificate or other interest of any trust of which the Principal Stockholder is a trustee, or any party to any other agreement or arrangement, whose consent is required for the execution and delivery of this Agreement or the consummation by the Principal Stockholder of the transactions contemplated hereby. Except as otherwise provided to the Company, no spousal consent is required for the execution and delivery of this Agreement or the consummation by the Principal Stockholder of the transactions contemplated hereby.

SECTION 3.2 Ownership of Shares. Except as listed on Schedule 3.2 hereto, as of the date hereof, the Principal Stockholder is the sole beneficial owner of the Owned Shares, free and clear of all pledges, liens, proxies, claims, charges, security interests, preemptive rights, voting trusts, voting agreements, options, rights of first offer or refusal and any other encumbrances or arrangements whatsoever with respect to the ownership, transfer or other voting of the Owned Shares other than the encumbrances created by this Agreement and any restrictions on transfer under applicable federal and state securities laws (collectively, “Liens”). As of the date hereof, there are no outstanding options, warrants or rights to purchase or acquire, or agreements or arrangements relating to the voting of, any Subject Shares and the Principal Stockholder has the sole authority to direct the voting of the Subject Shares in accordance with the provisions of this Agreement and the sole power of disposition with respect to the Subject Shares, with no restrictions, subject to applicable federal and state securities laws on his rights of disposition pertaining thereto (other than Liens or restrictions created by this Agreement). Except as listed on Schedule 3.2 hereto, the Principal Stockholder does not own beneficially or of record any other equity securities of the Company.

SECTION 4.1 No Inconsistent Agreement. The Principal Stockholder hereby covenants that he (a) has not entered into and shall not, at any time prior to the termination of this Agreement, enter into any agreement that would restrict, limit or interfere with the performance of his obligations hereunder and (b) shall not, at any time prior to the termination of this Agreement, knowingly take any action that would reasonably be expected to make any of his representations or warranties contained herein untrue or incorrect or have the effect of preventing or disabling him from performing his obligations under this Agreement.

SECTION 4.2 Restrictions on Certain Transfers and Proxies. (a) Other than pursuant to the terms of this Agreement, without the prior written consent of the Company or as otherwise provided in this Agreement, during the term of this Agreement, the Principal Stockholder shall not, directly or indirectly, (i) grant any proxies or enter into any voting trust or other agreement or arrangement with respect to the voting of any Subject Shares representing Excess Voting Power, or (ii) sell, assign, transfer, encumber or otherwise dispose of (including by merger, consolidation or otherwise by operation of law), or enter into any contract, option or other arrangement or understanding with respect to the direct or indirect assignment, transfer, encumbrance or other disposition (including by merger, consolidation or otherwise by operation of law), of any Subject Shares representing Excess Voting Power and in connection therewith retain any voting control or influence over the subject shares representing Excess Voting Power (or forming a Group for such purpose) unless the Principal Stockholder both agrees to and actually exerts such voting control or influence over the subject shares representing Excess Voting Power to have such shares voted in a manner consistent with the obligations set forth in Section 2.1 hereof.

(b) The Principal Stockholder is signing this Agreement solely in his capacity as a stockholder of the Company, and nothing contained herein shall limit or affect any actions taken by him in his capacity as an officer or director of the Company.

The Company hereby represents and warrants to the Principal Stockholder as follows:

SECTION 5.1 Authority for this Agreement. The Company has all necessary corporate power and authority to execute and deliver this Agreement and to consummate the transactions contemplated hereby. The execution and delivery of this Agreement by the Company and the consummation by the Company of the transactions contemplated hereby (i) will not violate any order, writ, injunction, decree, statute, rule, regulation or law applicable to the Company, (ii) will not violate or constitute a breach or default under any agreement by which the Company may be bound, (iii) require the consent of or any notice or other filing with any third party, including any governmental authority, and (iv) have been duly and validly authorized, and no other proceedings on the part of the Company are necessary to authorize this Agreement or to consummate the transactions contemplated hereby. This Agreement has been duly and validly executed and delivered by the Company and, assuming it has been duly and validly authorized, executed and delivered by the Principal Stockholder, constitutes a legal, valid and binding obligation of the Company enforceable against the Company in accordance with its terms, except to the extent that enforceability may be limited by bankruptcy, insolvency, reorganization, moratorium, fraudulent conveyance or other similar laws relating to or affecting enforcement of creditors’ rights generally, and general principals of equity (regardless of whether enforcement is considered in a proceeding at law or in equity.

SECTION 6.1 Termination. This Agreement and all of its provisions shall terminate upon the Termination Date; provided however, that Sections 6.3, 6.5, 6.7, 6.8 and 6.9 shall survive any termination of this Agreement. Nothing in this Section 6.1 shall be deemed to release any party from any liability for any breach by such party of his/its representations and warranties or any other terms and provisions of this Agreement.

SECTION 6.2 No Ownership Interest. Except as expressly set forth in this Agreement, including, without limitation, in Section 2.2 hereof, nothing contained in this Agreement shall be deemed to vest in the Company any direct or indirect ownership, or incidence of ownership, of or with respect to any Subject Shares. All rights, ownership and economic benefits of and relating to any Subject Shares shall remain and belong to the Principal Stockholder, and the Company shall not have any authority to exercise any power or authority to manage, direct, superintend, restrict, regulate, govern or administer any of the policies or operations of the Principal Stockholder or exercise any power or authority to direct the Principal Stockholder in the voting of any of the Subject Shares, except as otherwise expressly provided in this Agreement, including, without limitation, in Section 2.2 hereof.

SECTION 6.3 Notices. All notices, requests, claims, demands and other communications hereunder shall be given (and shall be deemed to have been duly received if given) by hand delivery in writing or by facsimile or e-mail transmission with confirmation of receipt or by a nationally recognized overnight courier service, as follows:

or to such other address as the Person to whom notice is given may have previously furnished to the others in writing in the manner set forth above.

SECTION 6.4 Validity. Whenever possible, each provision or portion of any provision of this Agreement will be interpreted in such manner as to be effective and valid under applicable law but if any provision or portion of any provision of this Agreement is held to be invalid, illegal or unenforceable in any respect under any applicable law or rule in any jurisdiction such invalidity, illegality or unenforceability will not affect any other provision or portion of any provision in such jurisdiction, and this Agreement will be reformed, construed and enforced in such jurisdiction as if such invalid, illegal or unenforceable provision or portion of any provision had never been contained herein.

SECTION 6.5 Entire Agreement; Assignment. This Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all other prior agreements and understandings, both written and oral, between the parties with respect to the subject matter hereof. The Agreement shall not be assigned by any party by operation of law or otherwise without the prior written consent of the other parties, provided that the Company may assign any of their respective rights and obligations to any affiliate thereof, but no such assignment shall relieve the Company of its obligations hereunder.

SECTION 6.6 Amendment. This Agreement may not be amended except by an instrument in writing signed by the Company (authorized by not less than a majority vote of the then independent and disinterested directors thereof) and the Principal Stockholder.

SECTION 6.7 Parties in Interest. This Agreement shall be binding upon and inure solely to the benefit of each party hereto, and nothing in this Agreement, express or implied, is intended to confer upon any other person or entity any rights or remedies of any nature whatsoever under or by reason of this Agreement.

SECTION 6.8 Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of Delaware (without giving effect to choice of law principles thereof).

SECTION 6.9 Enforcement of the Agreement; Jurisdiction; Venue. The parties agree that irreparable damage would occur in the event that any of the provisions of this Agreement were not performed by the Principal Stockholder in accordance with their specific terms or were otherwise breached. It is accordingly agreed that prior to the termination of this Agreement in accordance with Section 6.1, the parties shall be entitled to seek an injunction or injunctions to prevent breaches of this Agreement and to enforce specifically the terms and provisions of this Agreement in the state and Federal courts in Orange County, California, this being in addition to any other remedy to which they are entitled at law or in equity. In addition, each of the parties hereto (a) consents to submit itself to the personal jurisdiction of any such court in the event any dispute arises out of this Agreement or any transaction contemplated by this Agreement, (b) agrees that it will not attempt to deny or defeat such personal jurisdiction by motion or other request for leave from any such court, (c) agrees that it will not bring any action relating to this Agreement or any transaction contemplated by this Agreement in any court other than any such court and (d) waives any right to trial by jury with respect to any action related to or arising out of this Agreement or any transaction contemplated by this Agreement. The parties irrevocably and unconditionally waive any objection to the laying of venue of any action, suit or proceeding arising out of this Agreement or the transactions contemplated hereby in the state and Federal courts in Orange County, California, and hereby further irrevocably and unconditionally waive and agree not to plead or claim in any such court that any such action, suit or proceeding brought in any such court has been brought in an inconvenient forum.

SECTION 6.10 Descriptive Headings. The descriptive headings herein are inserted for convenience of reference only and are not intended to be part of or to affect the meaning or interpretation of this Agreement.

SECTION 6.11 Counterparts. This Agreement may be executed in counterparts, each of which shall be deemed to be an original, but all of which, taken together, shall constitute one and the same agreement.

SECTION 6.12 Further Assurances. From time to time, at the request of another party and without further consideration, each party hereto shall take such reasonable further action as may reasonably be necessary or desirable to consummate and make effective the transactions contemplated by this Agreement.

IN WITNESS WHEREOF, the Principal Stockholder and the Company have caused this Agreement to be duly executed as of the date set forth above.


QUEST SOFTWARE, INC.

By:		/s/ David P. Cramer
		Name: David P. Cramer
		Title: Vice President, General Counsel and Secretary

/s/ Vincent C. Smith
Vincent C. Smith