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:
May. 05, 2009
Filed:
Apr. 11, 2005
Kazuhiko Ikeuchi, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Hidejiro Daikokuya, Kawasaki, JP;
Yuji Noda, Kahoku, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Hidejiro Daikokuya, Kawasaki, JP;
Yuji Noda, Kahoku, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In case an error statistics of one of the disk drives exceeds a predetermined threshold, the disk is determined as a suspect disk drive. A recovery mode is set successively. During the time when a setting of the recovery mode is in progress and no access is made from a hostin this time, the address range of the suspect disk drive is specified. At the same time, a processing is started in that the data of the suspect disk is copied to a spare disksequentially to recover the data. The data of the suspect disk drive is copied to the spare disk driveto recover the data when the address range of the suspect disk drive does not correspond to the write failure address range of a management table. The data of a normal disk drive is copied to the spare disk driveto recover the data when the address range of the suspect disk drive corresponds to the write failure address range of the management table. Upon the completion of the recovery of the data, the suspect disk driveis separated and replaced with the spare disk drive