Methods and structure for improved import/export of raid level 6 volumes
US7418550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2005 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Mar 17, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1057
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and structure for improved import of RAID level 6 logical volumes into subsystems devoid of RAID level 6 hardware support. When a RAID level 6 logical volume is exported from a first storage subsystem and imported into a second storage subsystem devoid of RAID level 6 hardware support, features and aspects hereof first migrate the logical volume for use as a logical volume with a different RAID level supported by the second storage subsystem. The migration may be, for example, to a RAID level 5 logical volume performed by movement of data blocks to form new stripes and re-generation of associated parity blocks or by simpler re-mapping of existing blocks of the RAID level 6 volume to use only blocks and parity needed for RAID level 5 management. Further features and aspects allow migration to any other RAID management level supported by the second storage subsystem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.