The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 27, 2017

Filed:

Mar. 13, 2015
Applicant:

Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;

Inventor:

Jun Kato, Kawasaki, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 29/00 (2006.01); G06F 11/10 (2006.01);
U.S. Cl.
CPC ...
G06F 11/1076 (2013.01); G06F 2211/1028 (2013.01);
Abstract

A distributed storage system includes a plurality of storage devices and an information processing devices including a storage unit that is accessed more preferentially than the plurality of storage devices, and a processor. The processor deletes the data that can be restored from the storage unit when data that belongs to data stored in a first storage device and which can be restored is stored in the storage unit. The processor writes data that belongs to the data stored in the first storage device and which will not be restored to the storage unit. The processor switches the first storage device to the power-off state after writing the data. The processor reads the data that has been stored in the storage unit and which will not be restored when a request to read the data that will not be restored is given.


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