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:
Jun. 03, 2014
Filed:
Jul. 01, 2011
Takahiro Kito, Odawara, JP;
Koji Nagata, Kaisei, JP;
Kosuke Sakai, Isehara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A storage system comprises a storage device from which a physical storage area is created for storing data processed in an external apparatus, a thin provisioning controller creating a physical storage area pool with a plurality of unit physical storage areas from the physical storage area, and creating a logical volume from the physical storage area pool, and a snapshot controller designating the logical volume as a primary volume, defining a secondary volume which is a partner of the primary volume as a combination of the primary volume and difference data, assigning unused one of the unit physical storage areas to the area into which the difference data is to be stored, and setting a volume pair created with the primary volume and the secondary volume into a synchronizing state and a non-synchronizing state.