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:
Dec. 11, 2012
Filed:
Nov. 25, 2008
Miyuki Yasuda, Sagamihara, JP;
Naoki Hino, Hiratsuka, JP;
Kouichi Aihara, Zama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To shorten time necessary for performing backup of data in a virtual volume managed by a storage controller to a backup destination storage device. A secondary volume including storage areas of the same number as the number of first primary virtual areas is created with respect to a primary virtual volume (a virtual logical volume to be an I/O destination from an external device) including plural primary virtual areas. The first primary virtual areas are primary virtual areas to which actual areas are allocated. Data copy is performed from the primary virtual volume to the secondary volume. At the time of backup to the backup destination storage device, data backup is performed from the secondary volume to the backup destination storage device.