Method and system for leveraging spares in a data storage system including a plurality of disk drives
US6845465B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2001 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Feb 23, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1004
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for leveraging spare disks in a data storage system. Specifically the present invention describes a method for data recovery and redundancy in a data storage system having a plurality of disk drives. The data storage system is grouped into a plurality of arrays having data redundancy. The plurality of arrays is arranged in an optimum combination of arrays of mirrored pairs of disk drives, arrays of three disk drives in a redundant array of independent disks (RAID) configuration, and arrays of more than three disk drives in a RAID configuration to maximize performance while providing data redundancy. For every failure of one of said plurality of arrays due to a failed disk drive, a new array having data redundancy in a RAID configuration is dynamically created in said plurality of arrays. The new array is optimized for best performance and contains information from the failed disk drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.