For redundant virtual
drives (RAID 1, RAID 5, RAID 6, RAID 10, RAID 50, RAID 60)
with hot spare drives assigned, when a drive fails, or when you remove a drive,
the dedicated hot spare drive, if available, goes into the
Rebuilding state with the virtual drive in the
Degraded state. After rebuilding is complete, that
drive goes to the
Online state.
Cisco UCSM raises a
disk missing and virtual drive mismatch fault because although the virtual
drive is operational, it does not match the physical configuration that Cisco
UCSM expects.
if you insert a new
disk in the slot with the disk missing, automatic copy back starts from the
earlier hot spare disk to the newly inserted disk. After copy back, the hot
spare disk is restored. In this state all faults are cleared.
If automatic copy back
does not start, and the newly inserted disk remains in the
Unconfigured
Good,
JBOD, or
Foreign
Configuration state, remove the new disk from the slot, reinsert the
earlier hot spare disk into the slot, and import foreign configuration. This
initiates the rebuilding process and the drive state becomes
Online. Now, insert the new disk in the hot spare slot
and mark it as hot spare to match it exactly with the information available in
Cisco UCSM.