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NEC Assigned Patent

Storage system having defragmentation processing function

NEC Corporation, Tokyo, Japan, has been assigned a patent (9,367,256) developed by Yamamoto, Hiroaki, Tokyo, Japan, for a “storage system having defragmentation processing function.

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A storage system according to the present invention includes: a data storage controlling part that stores data into a storage device and, when storing other data of the same data content as the data, refers to the already stored data as the other data, and a defragmentation processing part that moves and stores storage target data stored in an area set as a defragmentation range within a predetermined region of the storage device, into another region of the storage device. The data storage controlling part stores reference frequency that is frequency of referring to data as other storage target data. The defragmentation processing part, depending on the reference frequency of the data, stores the data into an area to become a defragmentation range later within another region of the storage device.

The patent application was filed on February 11, 2014 (14/177,783).

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