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:
May. 29, 2012
Filed:
Oct. 16, 2008
Applicants:
Shinobu Kakihara, Odawara, JP;
Mitsuhide Sato, Ooiso, JP;
Inventors:
Shinobu Kakihara, Odawara, JP;
Mitsuhide Sato, Ooiso, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 13/00 (2006.01); G06F 13/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
To provide a storage subsystem in which, even when plural types of storage devices are provided, write processing from a cache memory to the plural types of storage devices is not delayed. Even when there are relative merits in writing performance of write data from the cache memory to the HDD and the SSD, the cache memoriesA,B with respect to the SSD having low writing performance are provided independently of the cache memoriesA,B with respect to the HDD.