The fibre channel port speed of all SAN Volume Controller 2145-8F2 nodes and all SAN
Volume Controller 2145-4F2 nodes in
the cluster can be changed by issuing the svctask chcluster command.
This is a customer task that
is only available to users who are logged on using the Administrator
or Security Administrator role.
Note: Changing
the fibre-channel port speed causes all nodes in the cluster to simultaneously
perform a warm start. This causes any I/O activity through the cluster
to fail and consequently might cause applications running on hosts
to fail. The SAN Volume Controller Console processing
also stops until the cluster connection is re-established.