User's Manual

226 Virtual Disks
Recommendations
Storage Management provides the ability to clear the bad block warnings. To
clear bad blocks, the following procedure is recommended:
1
Perform a backup of the virtual disk with the Verify option selected.
One of the two following scenarios can occur:
– Backup operation fails on one or more files. In this case, restore the
file from a previous backup. After restoring the file, proceed to step 2.
– Backup operation completes without error. This indicates that there
are no bad blocks on the written portion of your virtual disk.
If you still receive bad block warnings, the bad blocks are in a non-data
area. Proceed to Step 2.
2 Run Patrol Read and check the system event log to ensure that no new
bad blocks are found.
If bad blocks still exist, proceed to step 3. If not, the condition is cleared
without the need for step 3.
3 To clear these bad blocks, execute the Clear Virtual Disk Bad Blocks task.
This Clear Virtual Disk Bad Block feature is applicable to PERC H310
Adapter, PERC H310 Mini Monolithic, PERC H310 Mini Blades, PERC
H700, PERC H710 Adapter, PERC H710 Mini Blades, PERC H710 Mini
Monolithic, PERC H710P Adapter, PERC H710P Mini Blades, PERC H710P
Mini Monolithic, PERC H800, and PERC H810 Adapter family of
controllers.
RAID 6 Ready One bad block on a
physical disk.
The controller regenerates data
from peer disks and sends a Write
to the bad block. The disk then
re-maps the Logical Block
Addressing (LBA) to another
physical location. The problem is
resolved.
Table 12-2. Sample Scenarios For Virtual Disk Bad Blocks
RAID Level
Virtual Disk
State Scenario Result