Computer system and snapshot creation method thereof, delaying snapshot creation until pending transfer between volumes is complete
US7725668B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2006 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Feb 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
This computer system includes a first storage system and a second storage system. The first storage system has a data transfer unit for transferring the data stored in the first volume to the second volume of the second storage system. The second storage system has a snapshot creation unit for creating a snapshot of the second volume in a third volume based on a snapshot creation command. When the snapshot creation unit receives the snapshot creation command while transferring the data from the first volume to the second volume with the data transfer unit, it delays the creation of the snapshot of the second volume in the third volume until the transfer of the data from the first volume to the second volume is complete.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.