User's Manual

Virtual Disks 241
Cancel Background Initialization
Does my controller support this feature? See Supported Features .
On PERC 4/SC, 4/DC, 4e/DC, 4/Di, 4e/Si, and 4e/Di controllers, background
initialization of redundant virtual disks begins automatically after the virtual
disk is created. Because the initialization is run in the background, other
processes can continue while the initialization completes.
The background initialization of a redundant virtual disk prepares the virtual
disk for parity information and improves write performance. It is important
that the background initialization be allowed to run to completion. You can,
however, cancel the background initialization. When you do so, the controller
restarts the background initialization at a later time. For more information,
see
Background Initialization on PERC Controllers .
Use the Cancel Background Initialization task to cancel a background
initialization on a virtual disk.
NOTE: On the PERC 4/SC, 4/DC, 4e/DC, 4/Di, 4e/Si, and 4e/Di controllers, the
controller firmware uses the rebuild rate setting to control the system resource
allocation for the Background Initialization task. For more information, see Set
Rebuild Rate
.
Restore Dead Segments
Does my controller support this feature? See Supported Features .
Use the Restore Dead Segments task to recover data from a RAID-5 virtual
disk that has been corrupted. The Restore Dead Segments task attempts to
reconstruct data from a corrupt portion of a physical disk included in a RAID-
5 virtual disk. The Restore Dead Segments task uses the parity or redundant
information to reconstruct the lost data. This task is not always able to
recover lost data.
Delete
Does my controller support this feature? See Supported Features .
Use the Delete task to destroy all data on the virtual disk. For more
information, see
Virtual Disk Task: Delete .