Dot Hill Systems Corp. (Nasdaq: HILL), a provider of world-class storage solutions and software for OEMs, open storage partners and system integrators, today announced that it has been granted six new patents by the United States Patent and Trademark Office, bringing the company's portfolio to a total of 62 patents.

The new patents include the third super capacitor technology patent granted to Dot Hill for its pioneering use of super capacitors and flash memory as part of the company's patented EcoStor(TM) "green" battery-free alternative for cache memory for the company's high availability storage area network (SAN) and direct-attach 2000 and 3000 Series products. The EcoStor approach outlasts traditional batteries nearly fivefold, providing lower maintenance and disposal costs and reduced server and application down time due to scheduled battery replacement and maintenance. Dot Hill was an early pioneer in the technology, introducing battery-less cache protection as early as 2005 with its first 2000 Series products.

"Our engineering team continues to accelerate innovation at Dot Hill, as evidenced by this latest round of registered patents," said Jim Kuenzel, senior vice president of Engineering for Dot Hill. "We recognize that customers are always looking for better ways to implement and manage their storage, which is why we put such a focus on designing solutions that make a difference."

The latest Dot Hill patents achieved include:

U.S. Patent 7,661,002 "Storage controller super capacitor dynamic voltage throttling"

U.S. Patent 7,627,780 "Apparatus and method for deterministically performing active-active failover of redundant servers in a network storage appliance"

U.S. Patent 7,661,014 "Network storage appliance with integrated server and redundant storage controllers"

U.S. Patent 7,673,185 "Adaptive SAS PHY configuration"

U.S. Patent 7,676,600 "Network, storage appliance, and method for externalizing an external I/O link between a server and a storage controller integrated within the storage appliance chassis"

U.S. Patent 7,681,089 "Redundant storage controller system with enhanced failure analysis capability"