Dot Hill's SANnet Achieves U.S. Military Certification

Fibre Channel and SCSI Products Pass Ruggedization Standard -- MIL-STD-810F

Carlsbad, California, UNITED STATES

CARLSBAD, Calif. Jan. 16, 2002 (PRIMEZONE) -- Dot Hill Systems Corp. (NYSE:HIL), a leading provider of storage networking solutions, today announced that its SANnet(r) 7100 and 3300 series storage systems have been certified by an independent laboratory on a variety of United States Department of Defense (DOD) military ruggedization standards known as MIL-STD-810F. MIL-STD-810F focuses on environmental engineering issues and requires products to pass various laboratory tests to ensure that military equipment operates in worldwide environments.

Many government agencies and prime defense contractors require the products they use to be "mil-spec" certified. To achieve MIL-STD-801F certification, products must undergo rigorous environmental testing by an independent laboratory. Dot Hill's SANnet systems passed the following environmental tests: altitude, high and low temperature, humidity, functional shock, salt fog, transportation vibration and watercraft and marine vehicles.

Dot Hill Chief Technology Officer Dana Kammersgard said, "We were confident that our SANnet products would pass these rigid military specifications since they are already NEBS (Network Equipment Building Systems) Level 3 certified for our telecommunications customers. Dot Hill has a reputation for providing highly reliable and survivable products and has a successful track record in a wide variety of military programs and government agencies. SANnet was designed to be both rugged and compact, two factors that are of particular importance for our military and telecommunications customers."

Dot Hill is a leading independent provider of carrier-class data storage solutions and services. With SANnet solutions that include storage area networks, NEBS Level 3 certified systems for Telco and Internet operations, and world-class service capabilities, Dot Hill is uniquely positioned to address the storage requirements of mission-critical continuous computing environments. Dot Hill's customers include many of the world's leading Internet service providers, common carriers, service and equipment providers, advanced technology and telecommunications companies, and government agencies. Dot Hill is an ISO 9002 certified company, and its web site is

SANnet and the Dot Hill logo are registered trademarks and Dot Hill is a trademark of Dot Hill Systems Corp. All other products and names mentioned herein are trademarks or registered trademarks of their respective owners.

Certain statements contained in this press release regarding matters that are not historical fact are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act. Because such statements are subject to risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Such statements include the future availability of SANnet, SANnet's performance in particular environments, and the amount of revenue to be realized by Dot Hill due to MIL-STD-810F certification. The risks that contribute to the uncertain nature of the forward-looking statements include unforeseen technological, intellectual property or engineering issues and changing customer preferences. However, there are many other risks not listed here that may affect the future business of Dot Hill, as well as the forward-looking statements contained herein. To learn about such risks and uncertainties, you should read the risk factors set forth in the forms 10K and 10Q recently filed by Dot Hill. All forward-looking statements contained in this press release speak only as of the date on which they were made. Dot Hill undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made.



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