NEC Assigned Four Patents

Storage control system, and storage control program
NEC Corporation, Tokyo, Japan, has been assigned a patent (9,678,922) developed by Osuga, Toru, Tokyo, Japan, for a “data storage control system, data storage control method, and data storage control program.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A reduction in network load as well as an increase in speed of response through caching and an increase in communication efficiency through buffering are both achieved. A data storage control system that temporarily stores and controls data exchanged between a user terminal 1 and an online storage device 3 includes a storage unit 24 that temporarily stores receive data read from the online storage device 3 by the user terminal 1 and transmit data to be written in the online storage device 3 by the user terminal 1, and a data transmission unit 12 and a data control unit 23 that cause new storage of the transmit data in the storage unit 24 to wait in a case where a volume of the transmit data stored in the storage unit 24 is greater than a threshold value and/or in a case where an elapsed time from a last access to the receive data that is planned to be deleted next time among the receive data stored in the storage unit 24 is shorter than a threshold value.“

The patent application was filed on September 26, 2011 (13/823,586).

Storage and deduplication control
NEC Corporation, Tokyo, Japan, has been assigned a patent (9,671,974) developed by Kaczmarczyk, Michal, Barczynski, Marcin, Kilian, Wojciech, and Dubnicki, Cezary, Warsaw, Poland, for a “storage system and deduplication control method therefor.“

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 block detecting means for checking whether respective block data obtained by division are already stored in a storage device, and a data writing means for storing the respective block data obtained by division with duplicated storage eliminated into the storage device. The block detecting means detects a share rate representing a rate of a shared portion between a plurality of consecutive block data configuring a predetermined range in write target data among the block data obtained by division and a plurality of block data in a predetermined range already stored consecutively in the storage device. The data writing means, depending on the detected share rate, newly stores the block data obtained by division, into the storage device.“

The patent application was filed on September 10, 2012 (13/822,073).

Storage system with fast snapshot tree search
NEC Corporation, Tokyo, Japan, has been assigned a patent (9,665,304) developed by Iwanicki, Konrad, and Nowosad, Kamil, Warsaw, Poland, for a “storage system with fast snapshot tree search.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A storage system of the present invention includes: a data writing means for storing actual data configuring storage data into a storage device and, for every update of the content of the storage data, newly storing, and a data specifying means for specifying the latest storage data among the same storage data stored in the storage device. The data writing means is configured to store actual data configuring storage data in association with update information whose value increases by 1 for every update. The data specifying means is configured to check whether update information whose value is 2.sup.i, (i represents an integer of 0 or more) exists in the storage device in increasing order of the value of i, and specify the largest value of the existing update information among values between the largest value of 2.sup.i that corresponding update information exists and 2.sup.i+1.“

The patent application was filed on September 3, 2012 (13/818,226).

Storage system and support scheduled and operational going down of storing unit
NEC Corporation, Tokyo, Japan, has been assigned a patent (9,652,325) developed by Dematapitiya, Sumudu, Tokyo, Japan, for a “storage system and method to support scheduled and operational going down of a storing unit.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “There are provided: a distribution storage processing unit for distributing and storing a plurality of fragment data including division data obtained by dividing storage target data into a plurality of pieces and redundant data into a plurality of storing unit, an operation status detecting unit for detecting operation statuses of the respective storing unit, and a data regenerating unit for, in accordance with a result of the detection by the operation status detecting unit, when any of the storing unit goes down, regenerating the fragment data having been stored in the down storing unit based on the other fragment data stored in the other storing unit different from the down storing unit. Moreover, the data regenerating unit has a function of transferring and storing the fragment data stored in the storing unit previously scheduled to go down into the other storing unit before the storing unit goes down.“

The patent application was filed on August 25, 2010 (13/522,886).