Data storage with snapshot-to-snapshot recovery
US8381022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2011 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Apr 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention provide methods, apparatuses, systems, and computer software products for data storage. A first copy of a logical volume is created. A second copy of the logical volume is created based on the first copy of the logical volume, such that the first and second copies are represented by respective first and second sets of pointers to physical storage locations in which data used by the copies is stored. Responsively to a corruption of at least part of the data that is used by the first copy. The first copy is restored from the second copy by replacing the first set with the pointers in the second set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.