...The following disk drive(s) have been erased and will remain offline until hot-replaced or re-enabled by the Array Configuration Utility:
(followed by a list of drives)
Audible Beeps: None
Possible Cause: The drive erase operation was successfully completed and the drives are being held in an offline state to be sure that the drives remain blank until re-enabled by the user.
Action: Replace each drive in the list or re-enable each drive in the list using one of the following methods: