Disk array device with selectable method for generating redundant data
US6961816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2003 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Dec 29, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1066
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A disk array device selects a redundant generation method for reducing the overhead and improving the reliability associated with generating redundant data. The disk array device includes a disk controller connected to and controlling an array of disk drives. The disk controller includes a redundant data generator, a difference data generator, and a redundant data generation method selector. The redundant data generator is able to generate redundant data via a read and modify method and an all stripes method. The disk array device selects a method of generating redundant data from a method of read and modify and all stripes, and a method of generation in a drive and a method of difference, both of which are executed to generate redundant data on a disk drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.