Recovering from abnormal interruption of a parity update operation in a disk array system
US7487394B2 · kind B2 · utility
59Cited by
23References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 21, 2008 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Apr 21, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/109
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Data associated with the state of a parity update operation in a disk array system such as a RAID-6 system is stored during performance of the operation so that, in the event the operation is interrupted, recovery may be initiated using the stored data. The stored data may include a state indicator that is indicative of the status of the parity update operation, and snapshot data (e.g., a delta value indicative of a difference between new and old data) captured during the parity update operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.