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:
Jul. 14, 2015
Filed:
Oct. 06, 2014
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Akihiko Araki, Sagamihara, JP;
Yusuke Nonaka, Sagamihara, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 12/08 (2006.01); G06F 12/02 (2006.01); G06F 12/12 (2006.01);
U.S. Cl.
CPC ...
G06F 12/0871 (2013.01); G06F 12/0246 (2013.01); G06F 12/0873 (2013.01); G06F 12/121 (2013.01); G06F 2212/1021 (2013.01); G06F 2212/222 (2013.01); G06F 2212/262 (2013.01); G06F 2212/282 (2013.01); G06F 2212/466 (2013.01); G06F 2212/7208 (2013.01);
Abstract
An embodiment of this invention divides a cache memory of a storage system into a plurality of partitions and information in one or more of the partitions is composed of data different from user data and including control information. The storage system dynamically swaps data between an LU storing control information and a cache partition. Through this configuration, in a storage system having an upper limit in the capacity of the cache memory, a large amount of control information can be used while access performance to control information is kept.