Users Guide

NOTE: This procedure is not available for physical disks or devices that have been assigned as a hot spare or physical
disk or devices that are part of a virtual disk. In addition, this procedure is only supported for hot swap physical disks or
devices (disks that reside in a carrier.)
Rebuilding Data
Does my controller support this feature? See Supported Features.
Select the Rebuild task to reconstruct data when a physical disk in a redundant virtual disk fails.
NOTE: Rebuilding a disk may take several hours.
Related links
Replacing A Failed Disk That Is Part Of A Redundant Virtual Disk
Canceling A Rebuild
Does my controller support this feature? See Supported Features.
Select the Cancel Rebuild task to cancel a rebuild that is in progress. If you cancel a rebuild, the virtual disk remains in a Degraded
state. The failure of an additional physical disk can cause the virtual disk to fail and may result in data loss. It is recommended that
you rebuild the failed physical disk as soon as possible.
NOTE: If you cancel the rebuild of a physical disk that is assigned as a hot spare, reinitiate the rebuild on the same
physical disk in order to restore the data. Canceling the rebuild of a physical disk and then assigning another physical disk
as a hot spare does not cause the newly assigned hot spare to rebuild the data. Reinitiate the rebuild on the physical disk
that was the original hot spare.
Assigning And Unassigning Global Hot Spare
CAUTION: The SAS 6/iR controller enables you to assign two physical disks as global hot spare. Assigning a physical disk
as a global hot spare on a SAS 6/iR controller is likely to cause data loss from the physical disk. If the system or boot
partition resides on the physical disks, it may be destroyed. You should only assign physical disks that do not contain
critical data.
Does my controller support this feature? See Supported Features.
A global hot spare is an unused backup disk that is part of the disk group. Hot spares remain in standby mode. When a physical disk
that is used in a virtual disk fails, the assigned hot spare is activated to replace the failed physical disk without interrupting the
system or requiring your intervention. When a hot spare is activated, it rebuilds the data for all redundant virtual disks that were using
the failed physical disk.
You can change the hot spare assignment by unassigning a disk and choosing another disk as needed. You can also assign more than
one physical disk as a global hot spare.
NOTE: On SAS 6/iR controllers, you cannot assign physical disks that have boot partitions, as hot spares.
NOTE: On PERC S100 and S300 controllers, if there is free space available on the global hot spare, it continues to
function as a spare even after replacing a failed physical disk.
Global hot spares must be assigned and unassigned manually. They are not assigned to specic virtual disks. If you want to assign a
hot spare to a virtual disk (it replaces any physical disk that fails in the virtual disk), then use the Assign and Unassign Dedicated
Hot Spare.
NOTE: When deleting virtual disks, all assigned global hot spares may be automatically unassigned when the last virtual
disk associated with the controller is deleted. When the last virtual disk of a disk group is deleted, all assigned dedicated
hot spares automatically become global hot spares.
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