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:
Sep. 11, 2012
Filed:
Mar. 05, 2010
Chikashi Maeda, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Chikashi Maeda, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A storage system includes data storage devices, spare storage devices used when a failure occurs in a data storage devices, a group management unit that divides the data storage devices into groups and implements a redundancy, a data storage device restoration unit that assigns the spare storage device as a replacement when a failure occurs, and a configuration change unit changing configuration of the group to which the data storage devices belong. The configuration change unit includes, a spare storage device securing unit that secures the spare storage device, a change processor that writes data concerning the group into the spare storage device, and a change restoration unit that performs continuation of the configuration change, or restoration of the group to a state in a start, using the data written into the spare storage device when the configuration change of the group is interrupted.