Release Details

— CommVault best in class for total protection of Microsoft SharePoint Products and Technologies —

Bellevue, WA and Oceanport, NJ — June 1, 2006 — CommVault®, a provider of Unified Data Management™ solutions, today announced Galaxy Backup & Recovery has received the Editors' Choice Award for SharePoint backup and recovery from WindowsITPro Magazine. CommVault was judged superior to offerings from Symantec to win the award.

In a May 2006 article comparing leading backup and recovery solutions for Microsoft SharePoint Products and Technologies, CommVault garnered a total rating of 4.5 out of 5 points, earning kudos for its granular recovery and disaster recovery and business continuity capabilities. Citing CommVault's power and the completeness of its solution, the report noted CommVault's straightforward installation, support for backups to SAN and NAS environments, and ability to perform Synthetic Full backups. The article can be viewed at http://www.windowsitpro.com/Windows/Articles/ArticleID/49794/pg/2/2.html.

"Microsoft is pleased to work with CommVault to provide products that meet the needs of our mutual customers for enterprise-strength backup and recovery," said Robert Bernard, General Manager of the Global ISV Group at Microsoft. "We support CommVault for SharePoint Products and Technologies in our commitment to deliver innovative solutions that combine the strengths of Microsoft and CommVault."

"We're proud to receive this recognition from the experts at WindowsITPro Magazine," said Randy De Meno, Chief Microsoft Evangelist, CommVault. "The Editors' Choice Award for our SharePoint capabilities is an independent, third-party corroboration of the business value of CommVault technology. We rapidly adopted Microsoft SharePoint Technologies as an ‘Application Integrated' solution to meet the needs of many of our customers, who benefit from the fact that our SharePoint solution is part of CommVault's QiNetix architecture."

About CommVault
CommVault® provides Unified Data Management™ solutions for high- performance data protection, universal availability and simplified management of data on complex storage networks. The CommVault® QiNetix™ platform, based on CommVault's Common Technology Engine, integrates Galaxy backup and recovery, snapshot management and recovery, remote replication, active data migration and archiving, e-mail compliance, enterprise service level management and reporting and storage resource management software solutions. The QiNetix unified approach is designed to allow customers to add/integrate QiNetix components, at a fraction of the time, effort and money required by separate point products.

Information about CommVault is available at www.commvault.com or by calling (732) 870-4000. CommVault's corporate headquarters is located in Oceanport, New Jersey in the United States.

About CommVault Galaxy
CommVault Galaxy Backup & Recovery software offers users unified, scalable backup and recovery for distributed, heterogeneous environments. With Galaxy, policy-based actions can be enforced across all operating environments, applications and storage types. The easy-to-use, browser interface allows users to perform high-speed backups and restores to help maintain data access. Galaxy includes a robust reporting capability to ensure easy of management in enterprise data protection environments.

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.

©2006 CommVault Systems, Inc. CommVault Systems, CommVault Galaxy, CommVault QiNetix, DataMigrator, DataArchiver, QNet, CommServe StorageManager, MediaAgent, iDataAgent, CommCell and the CommVault logo are trademarks and may be registered trademarks in some jurisdictions of CommVault Systems, Inc. Product and company names herein may be trademarks of their respective owners.