First Quarter Fiscal 2010 Highlights Include:

                                                          GAAP Results:                                       Revenues                        $60.2 million       Income from Operations (EBIT)   $6.1 million        EBIT Margin                     10.1%               Diluted Earnings Per Share      $0.06                                                                   Non-GAAP Results:                                   Income from Operations (EBIT)   $9.3 million        EBIT Margin                     15.5%               Diluted Earnings Per Share      $0.15                                                                -------------------------------------------------------------------------------  

CommVault (NASDAQ: CVLT) today announced its financial results for the first quarter ended June 30, 2009.

N. Robert Hammer, CommVault's chairman, president and CEO stated, "We delivered a solid first quarter which was highlighted by a 10% growth in revenues and a 30% increase in Non-GAAP EBIT. Our Q1 revenue growth was driven by more enterprise deals during the quarter, strong demand for our Simpana 8 suite of products, especially deduplication and virtualization, and excellent results from our services organization. Our performance in a challenging economic environment demonstrates the quality and value that our Simpana software suite and related services provide to our customers worldwide."

Total revenues for the first quarter of fiscal 2010 were $60.2 million, an increase of 10% over the first quarter of fiscal 2009 and an increase of 7% over the prior quarter. Software revenue in the first quarter of fiscal 2010 was $29.1 million, an increase of 5% year-over-year and up 6% sequentially. Services revenue in the first quarter of fiscal 2010 was $31.1 million, up 14% year-over-year and 9% sequentially.

Income from operations (EBIT) was $6.1 million for the first quarter, a 34% increase from $4.5 million in the same period of the prior year. Non-GAAP income from operations (EBIT) increased 30% to $9.3 million in the first quarter of fiscal 2010 compared to $7.2 million in the first quarter of the prior year.

For the first quarter of fiscal 2010, CommVault reported net income of $2.4 million, a decrease of $1.0 million compared to the same period of the prior year. Non-GAAP net income for the quarter increased 17% to $6.4 million, or $0.15 per diluted share, from $5.5 million, or $0.12 per diluted share, in the same period of the prior year.

Operating cash flow totaled $13.0 million for the first quarter of fiscal 2010 compared to $14.1 million in the first quarter of fiscal 2009. Total cash and cash equivalents were $119.2 million as of June 30, 2009 compared to $105.2 million as of March 31, 2009.

CommVault did not repurchase any shares of common stock under its share repurchase plan during the first quarter of fiscal 2010. As of August 4, 2009, CommVault has repurchased $40.2 million of common stock (2,853,305 shares) out of the $80.0 million in total that is authorized under its stock repurchase program. As a result, CommVault may repurchase an additional $39.8 million of its common stock under the current program which runs through March 31, 2010.

A reconciliation of GAAP to non-GAAP results has been provided in Financial Statement Table IV included in this press release. An explanation of these measures is also included below under the heading "Use of Non-GAAP Financial Measures."

Recent Business Highlights:

On June 11, 2009, CommVault announced that McAfee, Inc. and CommVault have aligned to offer customers the availability of integrated data and security management features utilizing the two companies' respective data management, backup and security solutions.

On June 8, 2009, CommVault announced that it has strengthened its global OEM partnership with Dell through the introduction of the Dell PowerVault DL2000, powered by CommVault Simpana 8 software. This new joint offering is designed to help small and medium-sized businesses (SMBs) achieve significant operational efficiencies and cost savings with an all-in-one disk-based solution featuring embedded block-level deduplication and improved management of virtualized environments.

On June 2, 2009, CommVault announced that it has been recognized in Gartner's 2009 Magic Quadrant for E-Mail Active Archiving, published May 19, 20091. CommVault's E-mail Archiving and data retention solutions blend seamlessly as integral parts of the company's overall holistic approach to data and information management.

On July 14, 2009, CommVault announced that it continues to expand its North American PartnerAdvantage program with the addition of new online sales and technical accreditation capabilities. The enhancements reinforce the company's ongoing commitment to building and maintaining a robust channel by continually investing in cost-effective yet powerful tools and solutions that help channel partners drive revenue from CommVault® Simpana® 8 software.

On June 25, 2009, CommVault announced it was one of three companies selected as a 2009 Microsoft Worldwide Partner Conference Awards finalist in Advanced Infrastructure Solutions, Storage Solutions.

On May 11, 2009, CommVault announced that it surpassed the 10,000 customer milestone as forward-looking businesses around the world invest in CommVault technology and its proven ability to wring cost and complexity out of their existing environments.

Use of Non-GAAP Financial Measures

CommVault has provided in this press release the following non-GAAP financial measures: non-GAAP income from operations, non-GAAP income from operations margin, non-GAAP net income and non-GAAP diluted earnings per share. This selected financial information has not been prepared in accordance with GAAP. CommVault uses these non-GAAP financial measures internally to understand, manage and evaluate its business and make operating decisions. In addition, CommVault believes these non-GAAP operating measures are useful to investors, when used as a supplement to GAAP financial measures, in evaluating CommVault's ongoing operational performance. CommVault believes that the use of these non-GAAP financial measures provide an additional tool for investors to use in evaluating ongoing operating results and trends, and in comparing its financial results with other companies in CommVault's industry, many of which present similar non-GAAP financial measures to the investment community.

These non-GAAP financial measures should be considered as a supplement to, and not as a substitute for or superior to, financial information prepared in accordance with GAAP. Investors are encouraged to review the reconciliation of these non-GAAP measures to their most directly comparable GAAP financial measures, which are provided in Table IV included in this press release.

Non-GAAP income from operations and non-GAAP income from operations margin. These non-GAAP financial measures exclude noncash stock-based compensation charges and additional FICA expense incurred by CommVault when employees exercise in the money stock options or vest in restricted stock awards. CommVault believes that these non-GAAP financial measures are useful metrics for management and investors because they compare CommVault's core operating results over multiple periods. When evaluating the performance of CommVault's operating results and developing short and long term plans, CommVault does not consider such expenses. Although noncash stock-based compensation and the related additional FICA expense are necessary to attract and retain employees, CommVault places its primary emphasis on stockholder dilution as compared to the accounting charges related to such equity compensation plans.