CommVault Teams with Index Engines to Deliver Unrivaled Information Access for eDiscovery

April 22, 2008

High Speed, Low Cost Process for Migrating Legacy Data to CommVault Simpana Software for Support of eDiscovery Needs

OCEANPORT, N.J.--(BUSINESS WIRE)--April 22, 2008--CommVault (NASDAQ:CVLT) today announced that it has entered into a strategic partnership with Index Engines, a leader in enterprise discovery solutions, to assist customers in their eDiscovery efforts. Automating the eDiscovery process of migrating data from expensive and complex legacy tape systems and switching to a more cost effective information management solution built on CommVault(R) Simpana(R) software is a significant benefit for customers.

"Historically customers believed they were tied to their legacy backup systems for the recovery of older information stored on tape; maintaining costly and outdated servers was thought to be the only way of recovering this older data," said David West, CommVault's vice president of marketing and business development. "This partnership is about alleviating the cost and burden associated with accessing data from tapes, giving customers options and the confidence to make the switch to more efficient technology."

Index Engines' unique discovery platform is able to natively extract files and email from legacy tape backups, rendering legacy storage systems unnecessary. Utilizing Index Engines' platform, data on backup tapes can be cataloged, indexed, culled, deduped and searched. Once the information is identified and extracted from tape, it can then be processed using CommVault Simpana software for long term storage and management. Most companies have volumes of data stored on proprietary legacy tape formats. The CommVault and Index Engines partnership opens doors to customers concerned about legacy data recovery, but looking for more manageable and reliable alternatives to their antiquated systems.

By easing access to tape data, this partnership allows the option of transitioning from a legacy tape storage infrastructure to the Simpana platform. CommVault and Index Engines are able to assist companies in reducing tape storage cost and risks related to legacy tape backups through the consolidation of stored data. This can lead to a dramatic reduction in the costs associated with managing and accessing backup data on tape.

For more information about CommVault eDiscovery solutions, please visit http://www.commvault.com/solutions/legaldisc/index.asp.

About Index Engines

Founded in 2003, Index Engines is the leader in enterprise discovery solutions. Our mission is to organize enterprise data assets, making them immediately accessible, searchable and easy to manage. Businesses today face a significant challenge organizing their files and email to ensure timely and cost efficient access, while also maintaining compliance to regulations governing electronic data. Companies rely on Index Engines solutions for comprehensive insight into their data to simplify information discovery, classification and management.

The patent-pending Index Engines discovery platform is the only solution on the market to offer a complete view of electronic data assets. Online data is indexed in-stream at wire speed in native enterprise storage protocols, enabling high-speed, efficient indexing of proprietary backup and transfer formats. Index Engines' unique approach to offline records scans backup tapes, indexes the contents and extracts relevant data, eliminating the time-consuming restoration process. Index Engines provides the only comprehensive discovery platform across both online and offline data, saving time and money when managing enterprise information. For more information on Index Engines, please visit http://www.indexengines.com.

About CommVault(R)

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

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, and CommCell, are trademarks or registered trademarks of CommVault Systems, Inc. Index Engines and Litigation Readiness are trademarks or registered trademarks of Index Engines, Inc. All rights reserved. All product names mentioned are trademarks or registered trademarks of their respective organizations. 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.

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