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:
Dec. 08, 2009
Filed:
Feb. 23, 2006
Hidejirou Daikokuya, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Shinya Mochizuki, Kawasaki, JP;
Hideo Takahashi, Kawasaki, JP;
Yoshihito Konta, Kawasaki, JP;
Yasutake Sato, Kawasaki, JP;
Hiroaki Ochi, Kawasaki, JP;
Tsukasa Makino, Kawasaki, JP;
Norihide Kubota, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Shinya Mochizuki, Kawasaki, JP;
Hideo Takahashi, Kawasaki, JP;
Yoshihito Konta, Kawasaki, JP;
Yasutake Sato, Kawasaki, JP;
Hiroaki Ochi, Kawasaki, JP;
Tsukasa Makino, Kawasaki, JP;
Norihide Kubota, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A RAID system access a physical disk according to a host I/O request, and perform Rebuild/Copy back processing, for implementing high-speed Rebuild/Copy back processing without interrupting the processing of a normal I/O. When one disk device out of a plurality of disk devices constituting the RAID configuration fails, the processing size for one time of Rebuild/Copy back to reconstruct the RAID is changed according to the presence of a normal I/O managed in RAID control. When a normal I/O is present, Rebuild/Copy back can be executed without interrupting the processing of the normal I/O, and in a static state where a normal I/O is absent, a processing size larger than the size in that state can be specified so as to implement Rebuild/Copy back processing at high-speed.