Simultaneous writing and reconstruction of a redundant array of independent limited performance storage devices
US7350101B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2002 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Jan 17, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, computer program product, and data processing system for continuously writing new data to a redundant array of independent storage devices without interrupting the writing of new data to the array to reconstruct missing data from a failed device or failed media is disclosed. A fault-tolerance scheme using multiple independent parity values is used to record data to the array. In the event that one of the volumes in the array fails, the remaining volumes continue being written to, but with fewer data or parity values being employed. The failed volume can then be reconstructed following the completion of writing the media set currently being written.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.