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:
Feb. 14, 2012

Filed:

Oct. 08, 2008
Applicants:

Masanori Fujii, Odawara, JP;

Tsukasa Nishimura, Odawara, JP;

Sumihiro Miura, Odawara, JP;

Yoshinori Okubo, Odawara, JP;

Inventors:

Masanori Fujii, Odawara, JP;

Tsukasa Nishimura, Odawara, JP;

Sumihiro Miura, Odawara, JP;

Yoshinori Okubo, Odawara, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01); G06F 12/00 (2006.01); G06F 13/00 (2006.01); G06F 13/28 (2006.01);
U.S. Cl.
CPC ...
Abstract

A storage system, which is coupled to a computer, includes a storage device, a controller, a plurality of cache memory units, and a connecting unit. Each of the plurality of cache memory units includes: a cache memory for storing data; an auxiliary storage device for holding a content of data even after shutdown of power; and a cache controller for controlling an input/output of data to/from the cache memory and the auxiliary storage device. The cache controller store data stored in the cache memory, which is divided into a plurality of parts, into a plurality of the auxiliary storage devices included in the plurality of cache memory units.


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