CMMVC6587E The command did not complete because I/O for the array was not quiesced within the allotted time period.
Explanation
All outstanding I/O for the array must complete before the configuration can be changed. The command has failed because there is still outstanding I/O to be processed for the array, and the maximum amount of time allotted to the command has expired.
User response
Resubmit the task.