EMC Assigned Two Patents

Determining whether to migrate from source storage device to target storage device
EMC Corp., Hopkinton, MA, has been assigned a patent (8,880,821) developed by three co-inventors for “determining whether to migrate from a source storage device to a target storage device.”

The co-inventors are Weiqun Li, Shrewsbury, MA, Subin George, Framingham, MA, and Arieh Don, Newton, MA.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Determining whether to migrate from a source storage device to a target storage device includes determining if the target storage device is accessible by hosts that access the source storage device, determining if reservation information stored on the target storage device matches reservation information stored on the source storage device and migrating from the source storage device to the target storage device if the target storage device is accessible by hosts that access the source storage device and reservation information stored on the target storage device matches reservation information stored on the source storage device. Determining whether to migrate from a source storage device to a target storage device may also include, in response to initially determining that the reservation information stored on the target storage device does not match the reservation information stored on the source storage device, attempting to match the reservation information.“

The patent application was filed on June 28, 2012 (13/536,474).

Reliability and availability assessment of storage configurations
EMC, Hopkinton, MA, has been assigned a patent (8,880,801) developed by five co-inventors for “techniques for reliability and availability assessment of storage configurations.”

The co-inventors are Edward S. Robins, Winchester, MA, Sergey Rytenkov, St. Petersburg, Russia, Hagay Dagan, Pardes Hanna-Karkur, Israel, Dan Aharoni, Brookline, MA, and Kevin E. Granlund, Sutton, MA.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “Described are techniques for selecting a storage pool configuration. A set of one or more candidate storage pool configurations is determined. For each of the candidate storage pool configurations of the set, a reliability calculation is performed to determine a reliability value indicating reliability of the candidate storage pool configuration. For each of the candidate storage pool configurations of the set, an availability calculation is performed to determine an availability value indicating availability of the candidate storage pool configuration. In accordance with selection criteria, one of the candidate storage pool configurations of the set for a first storage pool is selected. The selection criteria includes the availability value and the reliability value for each of the plurality of candidate storage pool configurations“

The patent application was filed on Sept. 28, 2011 (13/200,658).