CommVault Simpana Suite Receives Windows Server 2008 Certification

September 8, 2008
    - Simpana 7.0 Software is Certified Across 32-bit and 64-bit
                    Windows Server 2008 Editions -

    - Certification Improves User Confidence in Migrating to Newer
  Versions of Windows, Exchange Server and Office SharePoint Server -

OCEANPORT, N.J.--(BUSINESS WIRE)--Sept. 8, 2008--CommVault (NASDAQ:CVLT):

    --  The CommVault(R) Simpana(R) 7.0 software suite is now
        certified for Microsoft's most advanced Windows Server
        operating system, Windows Server 2008.

    --  This latest certification helps ensure that joint CommVault
        and Microsoft customers upgrading to the newest 64-bit
        architecture will be able to confidently take advantage of the
        powerful Web, virtualization, security and management
        enhancements in Windows Server 2008, and still protect, access
        and restore older information stored on previous versions of
        the Microsoft operating system. This 'Release Independence'
        capability provides Simpana software users better management
        of their investments in Windows, Exchange Server and Office
        SharePoint Server.

    --  With industry analysts estimating that the worldwide
        deployments of Windows Server 2008 will grow to 2.5 million by
        the end of 2009(1), global enterprises will now be better able
        to meet regulatory requirements for data retention and
        availability on Windows Server 2008 and previous versions by
        using CommVault Simpana software.

    --  Built, tuned and certified on the Windows platform, CommVault
        Simpana software provides comprehensive data management that
        enables customers to backup, restore, archive and deploy file
        level deduplication capabilities. IT administrators can also
        manage content specific data within the enterprise, including
        migration functionality that can assist in migrating data from
        older versions of Windows, UNIX and Linux to Windows Server
        2008.

    --  All certification tests were conducted by VeriTest, the
        testing division of Lionbridge Technologies (NASDAQ: LIOX).
        With this certification, the award-winning CommVault Simpana
        software satisfied Microsoft's highest application development
        and testing standards. By migrating their IT infrastructures
        to Windows Server 2008 protected by Simpana 7.0, customers
        gain simplified, automated and unified Windows data
        management.

    --  As part of the Windows Server 2008 certification testing,
        CommVault software satisfied stringent reliability
        requirements after it was installed and ran on a 32-processor
        system. Additionally, CommVault Simpana 7.0 software was
        installed and ran on a Microsoft Cluster Server and
        demonstrated that it could support failover to four cluster
        nodes. During the testing, CommVault's service and support was
        also noted for high-quality and responsiveness.

    Supporting Quotes

    --  "Our customers tell us that powerful data management solutions
        are essential to creating dynamic IT environments. CommVault
        makes it easier for our customers to manage their Windows
        Server 2008 IT infrastructure and transparently take advantage
        of Exchange Server, Office SharePoint Server and the new
        Windows virtualization features, regardless of the hardware
        platforms our customers are using in their enterprise," said
        Ward Ralston, group product manager, Windows Server Group,
        Microsoft Corp.

    --  "In successfully completing Windows Server 2008 certification
        through VeriTest, CommVault offers customers a higher degree
        of confidence in making the purchasing decision for this
        latest Windows operating system. This ensures that CommVault
        is certified at the highest level of certification for Windows
        Server 2008, assuring the highest level of application
        compatibility," said Ward Ralston, group product manager,
        Windows Server Group, Microsoft Corp.

    --  "CommVault offers a complete suite of data and information
        management software to its customers and partners that is
        certified with Windows Server 2008. With CommVault Simpana, we
        are meeting customer demand for fast, highly available,
        scalable, and secure data management solutions that protect,
        archive, and restore file system and application data across
        virtually any Windows platform," said Randy De Meno, chief
        evangelist and Microsoft Partnership for CommVault.

    Supporting Resources

    --  Learn more about CommVault Simpana 7.0
        http://www.commvault.com/products/

    --  Learn more about CommVault's strategic partnership with
        Microsoft http://commvault.com/microsoft/

    --  Learn more about joint CommVault/Microsoft success stories
        http://www.commvault.com/microsoft/success.asp

    --  Learn more about CommVault's news
        http://www.commvault.com/news.asp

    --  Learn more about Windows Server 2008
        http://www.microsoft.com/windowsserver2008/en/us/overview.aspx

    About CommVault

A singular vision -- a belief in a better way to address current and future data management needs -- guides CommVault in the development of Singular Information Management(R) solutions for high-performance data protection, universal availability and simplified management of data on complex storage networks. CommVault's exclusive single-platform architecture gives companies unprecedented control over data growth, costs and risk. CommVault's Simpana(R) software suite of products was designed to work together seamlessly from the ground up, sharing a single code and common function set, to deliver superlative Data Protection, Archive, Replication, Search and Resource Management capabilities. More companies every day join those who have discovered the unparalleled efficiency, performance, reliability, and control only CommVault can offer. Information about CommVault is available at www.commvault.com. CommVault's corporate headquarters is located in Oceanport, New Jersey in the United States. (cvlt-pt)

Safe Harbor Statement

Customers' results may differ materially from those stated herein; CommVault does not guarantee that all customers can achieve benefits similar to those stated above. This press release may contain forward-looking statements, including statements regarding financial projections, which are subject to risks and uncertainties, such as competitive factors, difficulties and delays inherent in the development, manufacturing, marketing and sale of software products and related services, general economic conditions and others. Statements regarding CommVault's beliefs, plans, expectations or intentions regarding the future are 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. All such forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from anticipated results. CommVault does not undertake to update its forward-looking statements.

(C)1999-2008 CommVault Systems, Inc. All rights reserved. CommVault, CommVault and logo, the "CV" logo, CommVault Systems, Solving Forward, SIM, Singular Information Management, Simpana, CommVault Galaxy, Unified Data Management, QiNetix, Quick Recovery, QR, CommNet, GridStor, Vault Tracker, InnerVault, Quick Snap, QSnap, Recovery Director, CommServe, CommCell and ROMS, are trademarks or registered trademarks of CommVault Systems, Inc. All other third party brands, products, service names, trademarks, or registered service marks are the property of and used to identify the products or services of their respective owners. All specifications are subject to change without notice.

(1) Source: IDC, Worldwide Windows Server Operating Environments 2008-2012 Forecast: The Era of 64-bit, Hypervisors, and Windows Server 2008 Begins, Doc #211067, March 2008

CONTACT: CommVault
Dani Kenison, 732-728-5370 (Media)
pr@commvault.com
Michael Picariello, 732-728-5380 (Investor Relations)
ir@commvault.com

SOURCE: CommVault