CMMVC8474E The node cannot be updated because it would cause VDisks to go offline.
Explanation
You are requesting that the next node in the system
be updated as part of a paced system update. If this node is updated
then some volumes will temporarily go offline.
User response
Either address the issue causing the volumes not to be redundant, or resubmit the command using the -force option. If the -force option is used then some volumes will temporarily go offline.