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:
Aug. 12, 2014
Filed:
May. 16, 2012
Norihiko Kawakami, Sagamihara, JP;
Hiroshi Hirayama, Yokohama, JP;
Toru Tanaka, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Provided are a storage apparatus, a storage system, and a data migration method, with which a plurality of pool areas are assigned to a plurality of virtual volumes, the virtual volumes comprise virtual disks, the virtual disks comprise a plurality of logical segments, the pool areas comprise real volumes, the real volumes comprise a plurality of physical segments, logical segments are managed in association with physical segments, for each of the plurality of pool areas, and, if one virtual disk which is associated with one pool area is migrated to another pool area which differs from the one pool area, duplicate determination of data in the one pool area is executed, a data duplicate determination between the one pool area and the other pool area is executed on the basis of the result of the duplicate determination, and the one virtual disk is migrated to the other pool area.