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:
Apr. 20, 2010
Filed:
Nov. 04, 2004
Mutsumi Hosoya, Fujimi, JP;
Akira Fujibayashi, Sagami, JP;
Shuji Nakamura, Yokohama, JP;
Yasuo Inoue, Odawara, JP;
Mutsumi Hosoya, Fujimi, JP;
Akira Fujibayashi, Sagami, JP;
Shuji Nakamura, Yokohama, JP;
Yasuo Inoue, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
This invention enables a disk subsystem that employs the FC-AL connection to grasp the operation status of each disk drive, quickly locate a disk drive that has failed, and promptly carry out blocking processing. In a disk subsystem including plural drive enclosures which store disk drives, and a disk controller which controls transfer of data stored in the disk drives between the drive enclosures and a host computer. The drive enclosures each comprise a backend switch which is connected to the disk drives and to the disk controller, the backend switch comprises a status monitoring port through which operation status of switch ports of the backend switch is outputted, and the disk controller monitors a fault of the switch ports through the status monitoring port.