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Dot Hill Wins Patent for Storage Controller Architecture and Access Control

Wednesday, November 07, 2007

Carlsbad, CA -- Dot Hill Systems Corp. , a market leader in providing flexible storage offerings and responsive service and support to OEMs and system integrators (SIs), today announced it has received a new patent related to its storage controller architecture. The patented technology is designed to increase the efficiency of networked storage environments, by improving resource allocation within the controller and processor interfaces.

The United States Patent and Trademark Office has granted the company U.S. Patent #7,277,995, entitled "Storage controller and method for performing host access control in the host interface adapter."

The patented storage controller architecture and access control method improves the way in which the LUN control functions are performed within the storage controller. By migrating this functionality from storage controller firmware, which executes on the storage controller microprocessor, to the host interface controller, this method ultimately frees up the microprocessor to perform its other functions more effectively.

Invented by Ian Robert Davies and Thomas George Wicklund, members of Dot Hill's engineering team based in Longmont, Colo., the storage controller architecture and access control method is the 21st United States Patent to be awarded to Dot Hill.

"Dot Hill's world-class engineering team continues to raise the bar for storage system performance and scalability," said Jim Kuenzel, Dot Hill's senior vice president of engineering. "The addition of the storage controller architecture and access control method patent to Dot Hill's intellectual property portfolio further validates Dot Hill's ability to leverage new and emerging technologies to provide the best mix of performance and value for our customers."

About Dot Hill

Delivering innovative technology and global support, Dot Hill empowers the OEM community to bring unique storage solutions to market, quickly, easily and cost-effectively. Offering high performance and industry-leading uptime, Dot Hill's RAID technology is the foundation for best-in-class storage solutions offering enterprise-class security, availability and data protection. The company's products are in use today by the world's leading service and equipment providers, common carriers, advanced technology and telecommunications companies as well as government agencies. Dot Hill solutions are certified to meet rigorous industry standards and military specifications, as well as RoHS and WEEE international environmental standards. Headquartered in Carlsbad, Calif., Dot Hill has offices and/or representatives in China, Germany, Japan, Netherlands, United Kingdom and the United States. For more information, visit us at

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 growth, revenue and financial results of Dot Hill, the dates of availability, continued availability and performance of current or future Dot Hill products, any positive effect on Dot Hill's financial results or otherwise due to the issuance of any Dot Hill patent, and Dot Hill's ability to continue to receive patent protection on current or future patents. The risks that contribute to the uncertain nature of the forward-looking statements include: any unforeseen technological, intellectual property, supply 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 Dot Hill's public filings with the SEC, including the Forms 8-K, 10-K and 10-Q most 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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