CMMVC5825EThe managed disk (MDisk) was not deleted from the MDisk group because a virtual disk (VDisk) is allocated from one or more of the specified MDisks. A forced deletion is required.
Explanation
The managed disk (MDisk) was not deleted from the MDisk group because a virtual
disk (VDisk) is allocated from one or more of the specified MDisks.
Action
Specify the -force option, and resubmit the command.