LSI /Avago Assigned Patent

LSI Corporation/Avago Technologies, Ltd., San Jose, CA, has been assigned a patent (9,170,756) developed by Jess, Martin, Erie, CO, DeKoning, Rodney A., Wichita, KS, and McKean, Brian D., Longmont, CO, for a “method and system for dynamic storage tiering using allocate-on-write snapshots.”

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”System and method for dynamic storage tiering are disclosed. A storage hot-spot in a first storage pool is detected. A first point-in-time copy of a virtual volume including the storage hot-spot is created in a second storage pool according to the detecting. Write requests directed to the virtual volume are redirected to the second storage pool. When decreased I/O activity directed to the storage hot-spot in the second storage pool is detected, the point-in-time copy in the second storage pool is reintegrated into at least one of a second point-in-time copy or the virtual volume.“

The patent application was filed on March 31, 2009 (13/146,820).