Parity data management system apparatus and method
US7849356B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2008 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Jan 29, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1035
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for parity data management receives a write command and write data from a computing device. The apparatus also builds a parity control structure corresponding to updating a redundant disk array with the write data and stores the parity control structure in a persistent memory buffer of the computing device. The apparatus also updates the redundant disk array with the write data in accordance with a parity control map and restores the RAID controller parity map from the parity control structure as part of a data recovery operation if updating the redundant disk array with the write data is interrupted by a RAID controller failure resulting in a loss of the RAID controller parity map. In certain embodiments, the parity control structure is a RAID controller parity map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.