Method for recovering data from a redundant storage object
US7237141B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2003 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Jan 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/815
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for recovering data from a redundant storage object comprises a command, executable upon a redundant storage object, which provides a mechanism for discovering the existence of copies of the data image and the number of copies of the data image available. The present invention further provides the capability of retrieving a copy of the data image(s) from underlying virtualization layers. By querying specific layers of the IO path to determine if a specific layer has copies of the data image, the number of copies may be determined and specified copies of the data image retrieved. This allows higher layers within a system to perform recovery if incorrect data is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.