Box Hill Teams With Mercury to Expand SAN Software Offerings.

NEW YORK--(BUSINESS WIRE)--May 3, 1999--

Box Hill Systems Corp. (NYSE: BXH), a leading independent provider of storage and SAN solutions, has teamed up with Mercury Computer Systems, Inc. (NASDAQ: MRCY) of Chelmsford, MA to provide SANergy(TM) software, which allows files to be shared on Storage Area Network (SAN)-based storage, using standard networks and file systems. SANergy transcends platforms and file systems simply and transparently at full SAN speeds.

"Our customers demand comprehensive, state-of-the-art SAN software solutions," said Philip Black, Box Hill's CEO. "By integrating SANergy into our offerings we provide our customers with fully integrated hardware and software SAN Solutions."

Specifically designed to extend industry-standard file systems, protocols, and Storage Area Networks, Mercury's SANergy delivers the full file-sharing capabilities of LAN-based file servers at the high-speed data throughput of a SAN. The software maintains network-based access controls and data integrity across multiple operating systems without the bottleneck imposed by a file server. This allows SANergy to accelerate most I/O-intensive applications, including streaming multimedia, prepress "direct-to" workflows, data mining, and multi-server Web hosting. SANergy supports UNIX, Windows NT and Mac OS platforms.

"As one of the worldwide leaders in storage and SAN solutions, Box Hill brings our company an unparalleled level of expertise in integrating software and hardware SAN products," said Barry Burke, vice president and general manager of Mercury's Shared Storage Business Unit. "This expertise is invaluable to those customers requiring an integrated SAN solution."

Box Hill Systems Corp. is a leading independent provider of storage and SAN solutions. Box Hill, based in New York City, is recognized by a customer base that includes many of the largest financial telecommunications, digital imaging, multimedia, pharmaceutical, government and university research institutions in the world. Box Hill's home page is www.boxhill.com.

Box Hill and the Box Hill logo are trademarks or registered trademarks of Box Hill Systems Corp. SANergy is a trademark of Mercury Computer Systems, Inc. All other products mentioned herein are trademarks or registered trademarks of their respective owners. -0- Certain statements contained in this press release, including statements regarding the business, the intent, belief or current expectations of the Company, its directors or its officers, primarily with respect to the future operating performance of the Company and the products it expects to offer and other statements contained herein regarding matters that are not historical facts, are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act. Because such statements include risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Those risks and uncertainties include, among others: rapid technological change, frequent new product introductions, evolving industry standards and changing customer preferences in the Open Systems storage market. In addition, the Company's business and results of operations are subject to numerous additional risks and uncertainties, including: availability and cost of key components; dependence on a limited number of customers; reliance on the financial services and telecommunications industries; ability to attract, train, retain and motivate qualified management, technical, manufacturing, sales and support personnel, demand on administrative, operational, financial, manufacturing, sales and customer service resources caused by the Company's growth and expansion; and, the Company's ability to protect its proprietary software and other intellectual property rights. Additional risks and uncertainties that Box Hill Systems faces can be found in the form 10K most recently filed by the Company. All forward-looking statements speak only as of the date on which they are made. Box Hill undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they are made.