CMMVC9373E The command failed because the drive is only supported for Distributed Arrays, which do not use spares.

Explanation
An attempt was made to change the role of a FlashCore Module (FCM) so that it can be used as a
hot-spare drive. This error can occur when the chdrive -use spare
drive_id command is run on an FCM. Only distributed arrays are supported
on FCMs. FCMs cannot be used as hot-spare drives.

User response
Do not attempt to change the role of an FCM so that it can be used as a hot-spare drive. If you
are replacing failed drives in an array, insert the replacement drives directly into the same slot
as the failed drive, which causes the system to automatically configure the FCM as a replacement
member.

If the role of the replacement drive was already changed, inserting it in the same slot does not
cause the system to automatically replace the previous member drive in the array. In this situation,
use the charraymember command to add the replacement candidate drive directly
into the array. Change the role of the old drive to unused to remove it from
the system.

If the member drive was removed from the array by changing its role from
failed to unused, you must use the
charraymember command to service the array.