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:
Nov. 27, 2012
Filed:
Jan. 31, 2008
Hiroyuki Osaki, Yokohama, JP;
Futoshi Haga, Sagamihara, JP;
Yoshifumi Takamoto, Kokubunji, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a computer system to which a plurality of I/O devices are connected and a pool I/O device is included therein, a periodical operation confirmation is performed on a pool I/O device to be used when a fault occurs. A pool I/O device operation confirmation section obtains pool I/O device status information from a pool I/O device status information storage section (provided inside or outside the computer system). The status information includes a pool I/O device ID for identifying the pool I/O device, a type of the pool I/O device, a status value indicating an operation confirmation result, and an update time indicating the most recent operation confirmation time. Then, the pool I/O device operation confirmation section activates the pool I/O device and performs an operation confirmation thereon; terminates the operation of the pool I/O device after the operation confirmation; and updates the pool I/O device status information using the operation confirmation result obtained by the operation confirmation.