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. 05, 2019
Filed:
Jun. 10, 2015
Hitachi, Ltd., Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A management computer stores, in a memory, configuration information which indicates, by mapping, a virtual volume recognized by a host computer and a logical volume provided by a storage apparatus, and backup history information which manages a data backup history on a per virtual volume basis. Upon receiving a data backup request designating a virtual volume, the CPU of the management computer refers to the configuration information and acquires information of the logical volume mapped with the designated virtual volume. The CPU additionally refers to the backup history information and determines whether the logical volume currently mapped with the virtual volume coincides with the logical volume associated with the stored history. When it is determined that the mapped logical volume differs from the logical volume associated with the stored history, the CPU performs control to implement a differential backup between the logical volumes.