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:
Apr. 20, 2010
Filed:
Jan. 12, 2006
Hiroshi Yamakawa, Kawasaki, JP;
Mikihiko Tokunaga, Fujisawa, JP;
Shoichi Fukumoto, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A storage system and a data migration method that enable most suitable data migration with the correlation between data managed by particular applications being taken into account. The above storage system and data migration method are configured to collect operational information for each volume; respectively calculate a required volume performance level that is a level of performance required of the volume storing data that is a migration target, and an actual volume performance level that is a level of performance for each volume established in a storage apparatus, based on the collected information; and, in accordance with the calculated required volume performance level and each of the actual volume performance levels, when necessary, migrate the data that is a migration target to another volume having an actual volume performance level corresponding to the required volume performance level of the volume storing that data.