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:
Jul. 02, 2013
Filed:
Sep. 02, 2009
Daisuke Shinohara, Yokohama, JP;
Yukinori Sakashita, Sagamihara, JP;
Daisuke Shinohara, Yokohama, JP;
Yukinori Sakashita, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Provided are a storage system and its control method having superb functionality of being able to notify an administrator of the extent of impact of a pool fault in an easy and prompt manner. The foregoing storage system and its control method manage a storage area provided by a storage medium by dividing it into multiple pools, provide a virtual logical device to a host system, dynamically allocate a storage area to the logical device according to a data write request from the host system for writing data into the logical device, move data that was written into the logical device to another pool according to the access status from host system to such data, identify, when a fault occurs in any one of the pools, an extent of impact of the fault based on the correspondence relationship of the logical device and the pool, and notify the identified extent of impact of the fault to an administrator.