This procedure is intended to allow a spare SVC standby node to exist on the storage area network (SAN) such that it can be swapped in to the cluster should any node fail for one reason or another.

The reason for wanting to do this is to minimise the time that a cluster is exposed to only having a single node in the IOgroup. If a node fails due to a hardware issue, waiting for spare parts could possibly take a long time. If a spare node is ready and waiting, it can be quickly switched in to production when needed. The node that is removed can then be repaired in a more leisurely fashion, and once repaired can become the new standby node.

Provided all of the requirements in , “Requirements” are met, the precise ratio of standby nodes to SVC clusters does not need to be fixed at 1:1, although with more standby nodes and clusters, careful management of which standby nodes can be used with which clusters will be needed.

Description:

IBM 2145-CF8 SAN Volume Controller 1x Xeon 2.40GHz, 1x 73GB HDD, 1x 31P1344, 1x 41Y8445, 4x FTLF8528P2BCV-IE and dual 39Y7224 (675W power supply)

Product Details:

Intel Xeon Quad Core 5500 Series Processor

2x Power Supplies

4-Port 8Gbps Fibre Channel HBA

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