User's Manual

Virtual Disks 269
Virtual Disk Task: Change Policy
Does my controller support this feature? See Supported Features .
Use the Change Policy task to change a virtual disk’s read, write, or cache
policy. For more information, see
RAID Controller Read, Write, Cache, and
Disk Cache Policy
.
To change a virtual disk’s read, write, or disk cache policy:
1 Select the new policy from the Read Policy , Write Policy , and Disk Cache
Policy
drop-down menus.
2 Click Apply Changes . To exit without changing the virtual disk policy,
click
Go Back To Virtual Disk Page .
To locate this task in Storage Management:
1 Expand the Storage tree object to display the controller objects.
2 Expand a controller object.
3 Select the Virtual Disks object.
4 Select Change Policy from the Available Tasks drop-down menu.
5 Click Execute.
Split Mirror
Does my controller support this feature? See Supported Features .
Use the Split Mirror task to separate mirrored data originally configured as a
RAID 1, RAID 1-concatenated, or RAID 10 virtual disk. Splitting a RAID 1 or
RAID 1-concatenated mirror creates two concatenated non-redundant virtual
disks. Splitting a RAID 10 mirror creates two RAID 0 (striped) non-redundant
virtual disks. Data is not lost during this operation.
NOTE: The Split Mirror task is not supported on the CERC SATA1.5/2s controller.
NOTE: On the CERC SATA1.5/6ch controllers, doing a Split Mirror on a RAID 1-
concatenated virtual disk results in concatenated virtual disks that cannot be
subjected to any further modification. You cannot reconfigure or add disks to the
resulting concatenated virtual disks. If you do a Split Mirror on a RAID 1 virtual disk,
the resulting concatenated virtual disks can be reconfigured back to a RAID 1
virtual disk. After you have reconfigured to a RAID 1 virtual disk, further
reconfiguration may be possible. For information on restrictions associated with