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:
Nov. 12, 2013

Filed:

Aug. 14, 2012
Applicants:

Takayuki Fukatani, Yokohama, JP;

Yasutomo Yamamoto, Sagamihara, JP;

Tomohiro Kawaguchi, Cupertino, CA (US);

Masanori Takada, Yokohama, JP;

Yoshiaki Eguchi, Yokohama, JP;

Inventors:

Takayuki Fukatani, Yokohama, JP;

Yasutomo Yamamoto, Sagamihara, JP;

Tomohiro Kawaguchi, Cupertino, CA (US);

Masanori Takada, Yokohama, JP;

Yoshiaki Eguchi, Yokohama, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

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

For at least one of storage unit, processor and cache memory which are I/O process-participating devices related to I/O command process, when a load of one or more I/O process-participating devices or a part thereof is a low load equal to or less than a predetermined threshold value, a processing related to a state of one or more of the I/O process-participating devices or a part thereof is redirected to another one or more I/O process-participating devices or a part thereof, and the state of the one or more I/O process-participating devices or a part thereof is shifted to a power-saving state.


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