Method and apparatus for providing dynamic multi-pathing...

Details Method and apparatus for providing dynamic multi-pathing... Method and apparatus for providing dynamic multi-pathing...

2007-06-14

2011-11-15

Lohn, Joshua A (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S004200, C714S004210

Reexamination Certificate

active

08060775

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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