CommVault (NASDAQ: CVLT), Oceanport, NJ, Nov. 12, 2008

• CommVault today announced support for the Microsoft Windows Essential Business Server 2008 and Small Business Server 2008 platforms. These integrated and affordable multi-server solutions combine software for management, messaging, and security and provide small and mid-size customers the essential technology needed for a more secure and reliable infrastructure.
• Small and mid-size organizations often have sophisticated IT needs but face challenges such as supporting the growth of their businesses, limited IT staff, and the need for advanced protection, compliance, and disaster recovery capabilities.
• Optimized for Windows Server 2008 environments, CommVault® Simpana® 7.0 software offers a uniquely singular approach to data management, aligning and scaling data protection with the business needs of small and mid-sized enterprises. With expanded support for Windows Essential Business Server and Small Business Server, CommVault now provides customers greater flexibility and choice for deploying 64-bit applications powered by Windows Server 2008 technology.
• Simpana 7.0 software makes it easy for customers to deploy backup, replication, archive, resource management, or search software across Windows Essential Business Server and Small Business Server applications or file system data. This includes Exchange Server 2007, Microsoft Office SharePoint Server, SQL Server 2005, Active Directory, Windows Vista, Microsoft Office Live Communications Server 2005, and solutions such as Microsoft Dynamics powered by SQL Server 2005.
• Available immediately, Simpana software will allow organizations to set, manage, and execute data management policies across heterogeneous environments from a single console for maximum administrative efficiency and cost savings. CommVault Simpana software offers a wide range of integrated backup, archive, and content search features for Windows Essential Business Server and Small Business Server environments including:
  • eDiscovery – enabling a company to retain and access archive email messages, files, documents, and backup data to help meet today's internal audit, records retention, and compliance requirements.
  • Migration tools – enabling the migration and management of Exchange, SharePoint and file system data residing on older versions of Windows to versions on Windows Server 2008 to assist and accelerate upgrades.
  • Meeting corporate, HR, and regulatory compliance requirements through a rich set of content filtering, auditing, and review capabilities for regulated and non-regulated industries.
  • Archival and storage – expanding companies' abilities to securely capture, audit, and archive email, collaboration, file system, and NAS data.

Supporting Quotes:

• "Microsoft is pleased that CommVault's Simpana software suite will help give our EBS 2008 and SBS 2008 customers additional methods to address their content search, backup, recovery, archiving, and file level duplication needs, while taking advantage of the 64-bit operating system," said Russ Madlener, director, Windows Server Group, Microsoft Corp.
• "Small and medium businesses often have the same demands as large enterprises. The combination of Essential Business Server 2008, Small Business Server 2008, and CommVault Simpana allows these organizations to have access to a comprehensive, optimized solution for improved data management. With Essential Business Server 2008 or Small Business Server 2008, our mutual customers can leverage the full feature set that Simpana offers in a 64-bit environment, giving them simplified and more reliable access to their information," 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/

• More information on the Windows Essential Server Solutions product line
  http://www.microsoft.com/presspass/ presskits/ServerSolutions/businessserver.mspx

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

• Learn more about CommVault's news
  http://news.commvault.com/

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® 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® 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.

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.

©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.