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:
Jan. 06, 2009
Filed:
Mar. 16, 2006
Data storage system, data storage control device, and write error diagnosis method for disks thereof
Hideo Takahashi, Kawasaki, JP;
Norihide Kubota, Kawasaki, JP;
Hiroaki Ochi, Kawasaki, JP;
Yoshihito Konta, Kawasaki, JP;
Yasutake Sato, Kawasaki, JP;
Tsukasa Makino, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Shinya Mochizuki, Kawasaki, JP;
Hideo Takahashi, Kawasaki, JP;
Norihide Kubota, Kawasaki, JP;
Hiroaki Ochi, Kawasaki, JP;
Yoshihito Konta, Kawasaki, JP;
Yasutake Sato, Kawasaki, JP;
Tsukasa Makino, Kawasaki, JP;
Mikio Ito, Kawasaki, JP;
Hidejirou Daikokuya, Kawasaki, JP;
Kazuhiko Ikeuchi, Kawasaki, JP;
Shinya Mochizuki, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A storage system has a plurality of disk storage devices and a controller for controlling the plurality of disk storage devices, and diagnosis of a write miss to a disk of the disk storage device. The controller for controlling the plurality of disk storage devices attaches an ID to write data, and after write access to the disk drive, the controller reads the write data from the disk drive, and compares the ID of the read data and the attached ID. The controller updates the ID for each write command. Therefore the old write data and the new write data can be identified, accurate diagnosis is possible, and the failure of an individual disk drive can be detected immediately.