IBM Spectrum Virtualize: Hot-Spare Node and NPIV Target Ports
Historically, each physical Fibre Channel port on any IBM Spectrum Virtualize product has presented a single worldwide port name (WWPN) to the Fibre Channel fabric, and this port is capable of being used as a target for host I/O, an initiator for back-end controller I/O, and for internode and intercluster communications.
This multi-use port design is not ideal from the host point of view because an IBM Spectrum Virtualize node must message other nodes of the cluster before it knows its own configuration, including the volumes which are mapped to hosts. As such, it must bring online all Fibre Channel ports at software start up. The host therefore will log in and immediately request ...
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