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:
Sep. 30, 2014
Filed:
May. 17, 2012
Kentaro Watanabe, Yokohama, JP;
Takashi Tameshige, Tokyo, JP;
Masayasu Asano, Yokohama, JP;
Mutsumi Hosoya, Sagamihara, JP;
Hideo Saito, Kawasaki, JP;
Kentaro Watanabe, Yokohama, JP;
Takashi Tameshige, Tokyo, JP;
Masayasu Asano, Yokohama, JP;
Mutsumi Hosoya, Sagamihara, JP;
Hideo Saito, Kawasaki, JP;
Hitachi, Ltd., Toyko, JP;
Abstract
An example of the invention is a method of data migration from a source volume including storage areas of a plurality of source storage tiers different in performance capability to a destination volume including storage areas of a plurality of destination storage tiers different in performance capability, data relocation being performed among the plurality of source storage tiers in accordance with accesses to the source volume during the data migration. The method includes: starting the data migration between volumes from the source volume to the destination volume; acquiring information on a data arrangement in the source volume determined based on an access history to the source volume during the data migration between volumes from the source volume to the destination volume; and determining a data arrangement in the destination volume during the data migration between volumes based on the data arrangement indicated by the acquired information.