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:
Apr. 21, 2020
Filed:
Sep. 27, 2016
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Takao Yoshikawa, Tokyo, JP;
Yusuke Nonaka, Tokyo, JP;
Jin Choi, Tokyo, JP;
Masahide Kawarasaki, Tokyo, JP;
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/06 (2006.01); G06F 11/30 (2006.01); G06F 11/34 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0659 (2013.01); G06F 3/0604 (2013.01); G06F 3/0611 (2013.01); G06F 3/0653 (2013.01); G06F 3/0658 (2013.01); G06F 3/0689 (2013.01); G06F 11/3034 (2013.01); G06F 11/3419 (2013.01); G06F 11/3485 (2013.01); G06F 2206/1012 (2013.01);
Abstract
A storage controller measures a RAID group (RG) operating time, which is the operating time of an RG. The storage controller then corrects the measured RG operating time, which is used to calculate the operating rate of the RG, on the basis of a correction coefficient associated with the type of the physical devices (PDEVs) constituting the RG, and on the basis of the RG backend multiplicity, which is the multiplicity of the I/O commands transmitted to the RG.