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:
Mar. 26, 2013
Filed:
Dec. 24, 2009
Ken Matsuda, Odawara, JP;
Daisuke Orikasa, Odawara, JP;
Yutaka Takata, Ninomiya, JP;
Yoshiaki Eguchi, Yokohama, JP;
Ai Satoyama, Sagamihara, JP;
Yoichi Mizuno, Yokohama, JP;
Ken Matsuda, Odawara, JP;
Daisuke Orikasa, Odawara, JP;
Yutaka Takata, Ninomiya, JP;
Yoshiaki Eguchi, Yokohama, JP;
Ai Satoyama, Sagamihara, JP;
Yoichi Mizuno, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Multiple storage area groups into which multiple storage areas provided by multiple storage devices are classified with reference to storage area attributes are managed. The multiple logical volumes to which, in accordance with a write request to at least one address included in multiple addresses in the logical volume, at least one storage area included in the multiple storage areas is allocated are provided. In accordance with the access condition of the at least one address in the logical volume, the data written to the at least one address by the write request is migrated from the at least one storage area included in one of the multiple storage area groups to at least one storage area in another storage area group included in the multiple storage area groups.