Method, system, and program for handling a failover to a...

Details Method, system, and program for handling a failover to a... Method, system, and program for handling a failover to a...

2006-05-09

2006-05-09

Peikari, B. James (Department: 2189)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C711S162000, C714S006130, C714S006130, C714S006130

Reexamination Certificate

active

07043665

ABSTRACT:
Provided are a method, program, and system for managing data. A mirror policy is processed indicating volumes in a first storage system to mirror to volumes in a second storage system and volumes in the second storage system to mirror to volumes in a third storage system, wherein the third storage system is at a first geographical location remote with respect to a second geographical location including the first and second storage systems. A failure is detected of the first and second storage systems at the first geographical location. Automatic reconfiguration is made to network resources directing I/O requests to volumes in the first storage system to direct I/O requests to volumes in the third storage system. A failure of the first storage system and the availability of the second storage system is detected and, in response, network resources are reconfigured to direct I/O requests to volumes in the first storage system to volumes in the second storage system in response to detecting the failure of the first storage system and the availability of the second storage system. Updates to the second storage system are copied to the third storage system after reconfiguring network resources to direct I/O requests to volumes in the first storage system to volumes in the second storage system.

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