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.
Patent No.:
Date of Patent:
Sep. 18, 2012
Filed:
Mar. 11, 2009
Applicants:
Noriko Nakajima, Machida, JP;
Yuichi Taguchi, Sagamihara, JP;
Inventors:
Noriko Nakajima, Machida, JP;
Yuichi Taguchi, Sagamihara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 9/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a criterion for determining whether or not to apply de-duplication processing. That is, by setting a reduction effect threshold to control switching the de-duplication between ON and OFF, the present invention allows operation such that the de-duplication is applied for a volume for which a high capacity-reduction effect is provided by the de-duplication processing, and in contrast, the de-duplication is not applied to maintain performance for a volume for which a low capacity-reduction effect is provided by the de-duplication processing.