Quest Acquires Virtualized Infrastructure Operations Management Provider VKernel

Quest Software, Inc. (NASDAQ: QSFT) announced today it has acquired VKernel, a privately held virtualized infrastructure operations management provider based in Boston, Mass. VKernel, a leading provider of capacity management products for virtualized data centers and cloud environments, will continue to operate as an independent subsidiary of Quest.

Supporting Resources:

• Quest Software, Inc.: http://www.quest.com/
• VKernel: www.vkernel.com
• Virtualization and Cloud Management: http://www.quest.com/virtualization/
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About Quest:

Quest Software (Nasdaq: QSFT) simplifies and reduces the cost of managing IT for more than 100,000 customers worldwide. Our innovative solutions make solving the toughest IT management problems easier, enabling customers to save time and money across physical, virtual and cloud environments. For more information about Quest solutions for administration and automation, data protection, development and optimization, identity and access management, migration and consolidation, and performance monitoring, go to www.quest.com.

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Quest, Quest Software and the Quest logo are trademarks or registered trademarks of Quest Software in the United States and certain other countries. All other names mentioned herein may be trademarks of their respective owners.

Forward Looking Statements:
This press release includes predictions, statements and other information relating to our acquisition of VKernel might be considered forward-looking statements. These statements are based on current expectations and assumptions that are subject to risks and uncertainties. Actual results could differ materially from those anticipated as a result of various factors, including: risks that the transaction or related integration activity may disrupt current plans, projects and operations, and our ability to recognize the benefits of the acquisition; reductions or delays in information technology spending; adverse changes in general economic or market conditions; our ability to successfully integrate VKernel’s personnel, products and technologies; competitive factors, including industry consolidation, entry of new competitors into markets occupied by VKernel’s products, and new product and marketing initiatives by our competitors; our ability to retain existing personnel and recruit and retain qualified personnel; and other risks described from time to time in Quest’s filings with the SEC. For a discussion of these and other related risks, please refer to our recent SEC filings, including our Annual Report on Form 10-K for the year ended December 31, 2010, which are available on the SEC's website at www.sec.gov. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date thereof. We undertake no obligation to update forward-looking statements to reflect events or circumstances after the date thereof.