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:
Nov. 03, 2015
Filed:
Nov. 19, 2012
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Azusa Jin, Sagamihara, JP;
Tomohiro Kawaguchi, Fujisawa, JP;
Masahiro Arai, Machida, JP;
Hiroaki Akutsu, Yokohama, JP;
Assignee:
HITACHI, LTD., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 12/02 (2006.01); G06F 3/06 (2006.01);
U.S. Cl.
CPC ...
G06F 12/023 (2013.01); G06F 3/067 (2013.01); G06F 3/0608 (2013.01); G06F 3/0644 (2013.01); G06F 3/0689 (2013.01);
Abstract
The present invention relates to executing data compression based on the used capacities of real pools. The present storage subsystem stores a definition information regarding conditions of starting data compression and ending data compression defined via usage rates of a real pool as physical area, wherein if the usage rate of the real pool satisfies the condition for starting compression, the compression processing is started, and if the usage rate satisfies the condition for ending compression, the compression processing is ended.