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:
May. 14, 2013
Filed:
May. 12, 2010
Yusuke Konishi, Odawara, JP;
Hiroshi Izuta, Odawara, JP;
Hiroyoshi Suzuki, Numadu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An objective is to allow a storage apparatus to accurately locate a failure site upon occurrence of a failure. Provided is a storage apparatusincluding: a controllerthat performs data input and data output into and from a storage drivein response to a data input/output request sent from an external device; and expanderseach having a switch circuitprovided with a physical port (Phy). In this storage apparatus, the controllerperforms a loopback diagnosis on the expanders, and performs a connection-based diagnosis on a target device by sending a connection frame thereto, the target device being a device detected as having a failure. When a response to the connection frame includes information indicating a failure, the controllerdisables the physical port to which the target device is coupled, or the physical port of the switch circuitexisting on a path from the controllerto the target device.