Users Guide

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1. Select the new policy from the Read Policy, Write Policy, and Disk Cache Policy drop-down menus.
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2. Click Apply Changes. If you want to exit without changing the virtual disk policy, click Go Back To Virtual Disk Page.
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To locate this task in Storage Management:
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1. Expand the Storage tree object to display the controller objects.
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2. Expand a controller object.
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3. Select the Virtual Disks object.
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4. Select Change Policy from the Available Tasks drop-down menu.
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5. Click Execute.
Split Mirror
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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 nonredundant virtual disks. Splitting a RAID 10 mirror creates two RAID 0 (striped) nonredundant virtual disks.
Data is not lost during this operation.
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To Split a Mirror:
Click Split Mirror. If you want to exit without splitting the mirror, click Go Back To Virtual Disk Page.
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To locate this task in Storage Management:
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1. Expand the Storage tree object to display the controller objects.
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2. Expand a controller object.
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3. Select the Virtual Disks object.
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4. Select Split Mirror from the Available Tasks drop-down menu.
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5. Click Execute.
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Related Information:
l "Rescan to Update Storage Configuration Changes"
l "Time Delay in Displaying Configuration Changes"
NOTE: In cluster mode, the PERC 3/DC controller only allows write-through caching.
NOTE: The Split Mirror task is not supported on the CERC SATA1.5/2s controller.
NOTE: On the PERC 3/Si, PERC 3/Di, and 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. See "Number of Physical Disks per Virtual Disk" and "Exceptions to One
Physical Disk Limitation for Concatenated Virtual Disks on PERC 3/Si, 3/Di, CERC SATA1.5/6ch, and CERC SATA1.5/2s Controllers" for information on
restrictions associated with concatenated virtual disks on these controllers.
NOTE: On the PERC 3/Si, PERC 3/Di, or CERC SATA1.5/6ch controllers, this operation is not supported when using a dynamic virtual disk or for a RAID 1
virtual disk that is in a Failed Redundancy state.
NOTE: On Linux, a Split Mirror cannot be performed on a mounted virtual disk. For this reason, a Split Mirror cannot be performed on the boot drive.
CAUTION: Your virtual disk will no longer be redundant after performing a Split Mirror operation.