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. 13, 2012
Filed:
Sep. 08, 2011
Hiroshi Suzuki, Sagamihara, JP;
Tsutomu Koga, Matsuda, JP;
Tetsuya Inoue, Odawara, JP;
Tomokazu Yokoyama, Fujisawa, JP;
Kenji Jin, Yokohama, JP;
Hiroshi Suzuki, Sagamihara, JP;
Tsutomu Koga, Matsuda, JP;
Tetsuya Inoue, Odawara, JP;
Tomokazu Yokoyama, Fujisawa, JP;
Kenji Jin, Yokohama, JP;
Hitachi Ltd., Tokyo, JP;
Abstract
One or more switches are interposed between a controller portion and a storage device. When transmission of a command to a certain storage device fails, a command is transmitted starting from an upstream side to a downstream side of a path between the controller portion and the switch to which the certain storage device is connected, and when command transmission fails while transmitting a command from a kswitch (k is an integer of 0 or more) which is connected to a (k+1)switch and is one level upstream of the (k+1)switch or from any port of the controller portion, it is determined that a failure has occurred in a power source that supplies power to the (k+1)switch.