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. 25, 2006
Filed:
Jul. 01, 2004
Teiko Kezuka, Odawara, JP;
Akira Murotani, Odawara, JP;
Seiichi Higaki, Ninomiya, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
According to the present invention, each of a plurality of LUs existing on a storage control systemis divided into a plurality of chunks. A PVOL is comprised of only FC-chunks, but an SVOL is comprised of both FC-chunks and SATA-chunks. To each of the plurality of SVOL-chunks corresponding to the plurality of PVOL-chunks respectively, either an FC-chunk or SATA-chunk selected from a plurality of pool chunks is dynamically corresponded based on the update frequency of the sub-data of the corresponding PVOL chunk. Specifically, if an SVOL-SATA-chunk is corresponded to the PVOL-chunk of which the data update frequency is high, for example, the pool FC-chunk is corresponded as a sub-data swap destination in that SVOL-SATA-chunk.