Storage system using thin provisioning pool and snapshotting, and controlling method of the same
US8745344B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2011 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Dec 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.