OCEANPORT, N.J. — June 10, 2008 — CommVault (NASDAQ: CVLT) today announced that its Simpana® 7.0 software suite has been named the winner in the Storage Software category in the Eighth Annual eWEEK Excellence Awards. According to the judges, "CommVault® Simpana 7.0 has every feature a company of virtually any size needs to institute a full-fledged enterprise storage system."

"We received hundreds of entries this year, and the Excellence Awards judges were impressed by the extent to which the products and services reflect today's increasingly complex challenges," said eWEEK editor Debra Donston. "The winners, including the CommVault Simpana software suite in the Storage Software category, rose to the top for their innovation, their cost-effectiveness and their ability to help companies align technology with business needs."

CommVault's Simpana software suite, adopted by thousands of customers since its introduction in July of last year, addresses the problems end-users face as they try to manage data to fulfill their current risk mitigation, disaster recovery, or archive and compliance requirements. With CommVault Simpana software, storage management technologies are unified to meet customer demand for a single data and information management platform rather than having the user be the integrator for multiple point solutions. By giving businesses a single, holistic view across multiple data silos and storage tiers with its unique Singular Information Management® approach, CommVault Simpana software enhances an organization's ability to remain competitive by helping to maximize business resources and reducing costs, while improving the responsiveness and agility of the IT organization.

"We are honored to be recognized by eWEEK for our innovations in delivering next-generation data protection and information management technology," said Bob Hammer, CommVault's chairman, president and CEO. "Today's award is a significant endorsement of CommVault's leadership in the data and information management market and reaffirms our commitment to delivering best-in-class enterprise software solutions to our customers."

This award is the seventh notable industry accolade CommVault has won since the company launched the Simpana suite in July 2007, including the Diogenes Labs/Storage Magazine Quality Award, Storage Magazine Product of the Year Gold Medal in Backup and Recovery, SNW Fall Best Practices in Storage Awards, SearchServerVirtualization Product of the Year Silver Medal Award, and ServerWatch Best Compliance Automation Tool.

The eWEEK Excellence Awards program provides enterprise professionals with a comprehensive benchmark for assessing a wide range of technology products and services. Evaluating the entries is a panel of experts including eWEEK Labs analysts and eWEEK Corporate Partners – senior enterprise IT professionals who act as reader representatives. More information on this year's award winners is available at www.eweek.com/c/a/Security/eWEEK-Excellence-Awards-Honorees-Reflect-New-IT-Computing-Trends-Challenges/1/. Readers can also select from among the eWEEK Excellence Awards honorees for the product that users think will have the biggest positive impact on business moving forward by voting for the eWEEK Best in Show by June 11, 2008 at www.eweek.com/c/a/Security/eWEEK-Excellence-Awards-Honorees-Reflect-New-IT-Computing-Trends-Challenges/2/.

About the eWEEK Excellence Awards
The eWEEK Excellence Awards program provides the benchmark by which enterprise IT professionals can assess a wide range of technology products and services. A panel of eWEEK editors judged the entries this year. They applied their industry and technology expertise to their evaluation of the hundreds of products and services entered into the program. The entries were evaluated based on:

• Innovation
• Practical integration of emerging technologies
• Suitability to task
• Cost effectiveness
• Potential for helping companies create business efficiencies
• Manageability
• Potential for helping companies develop competitive advantage
• Secureability

About eWEEK
eWEEK is the industry leader for strategic technology information, delivering breaking news, technology evaluations and strategic analysis of the technologies, platforms and trends important to enterprise-wide computing. eWEEK's award-winning journalists and lab analysts cover the most critical issues, trends, people and technologies affecting business. No other IT newsweekly delivers this level of enterprise focused news, views and reviews to help IT professionals make the right buying decisions.

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.