Method and apparatus for providing dynamic multi-pathing (DMP) for an asymmetric logical unit access (ALUA) based storage system
US8060775B1 · kind B1 · utility
70Cited by
36References
18Claims
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Key dates
| Filing date | Jun 14, 2007 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Jan 26, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for providing dynamic multi-pathing for an asymmetrical logical unit access (ALUA) based storage system. The method comprises identifying a first processor within a storage system as providing an optimized path to a disk array, identifying a second processor within a storage system as providing an unoptimized path to the disk array and, in response to failure of the optimized path, immediately switching from the optimized path to the unoptimized path.
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