CommVault President and Chief Executive Officer to Address Thomas Weisel Partners' Investor Forum

May 21, 2008

OCEANPORT, N.J.--(BUSINESS WIRE)--May 21, 2008--CommVault (NASDAQ:CVLT) today announced that president and CEO N. Robert Hammer will speak with investors during the Thomas Weisel Partners' investor forum. The discussion will take place May 22, 2008 at 9:00 a.m. Eastern Time.

Mr. Hammer will discuss the company's strategy and its latest earnings announcement, as well as topics related to the software industry.

Investors may listen to the discussion by dialing 877-856-1955 (domestic) or 719-325-4806 (international). A replay will be available by dialing 888-203-1112 (domestic) or 719-457-0820 (international). The passcode for the discussion and replay is 9197847.

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.

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, 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.

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

SOURCE: CommVault