CMMVC9365E The node cannot be removed because it would result in an I/O group outage. Use -force flag to override.
Explanation
The rmnode command cannot be used to remove the last node in an I/O group unless you specify the -force parameter.
User response
Ensure that you want to remove the last node in the I/O group. If you are certain that you want to remove the last node in the I/O group, enter the rmnode command with the -force parameter.