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:
Mar. 24, 2009
Filed:
Jan. 31, 2005
Takashi Kawada, Kawasaki, JP;
Kazuo Nakashima, Kawasaki, JP;
Osamu Kimura, Kawasaki, JP;
Fujitsu Limited, Nakahara-Ku, Kawasaki-Shi, Kanagawa, JP;
Abstract
A disk array device has: a CM separating part that, when abnormality occurs in a CM, separates the CM in which the abnormality has occurred from a storage system after write of CM operation information data to a hard disk is completed; and communication path reconfiguring parts that reconfigure communication paths between the CM in which the abnormality has occurred and DAs. When abnormality occurs in the CM, the communication paths between the CM and the DAs are reconfigured, and after the CM operation information data of the CM is written to the hard disk, the CM is separated. Therefore, the write processing is not interrupted halfway, so that the useful operation information data regarding the cause of the problem occurrence can be written to the hard disk having a sufficient storage area.