Use the
Verifying VDisk Copies panel in the SAN Volume Controller Console to
start the virtual disk (VDisk) copy verification process for a selected
VDisk
copy. The VDisk copy verification process checks if data on the copies
matches
the data on the primary VDisk. You can select actions that the SAN Volume Controller Console
to takes if differences are found during verification.
Fields
The
following fields can be updated:
- If differences
are found
- Select the action that you want the system to take
when it detects discrepancies
between the primary VDisks and copies. The following actions are possible:
- Stop on first difference
- Select
this option to stop the verification process after
the first difference is found. Use this option if you only want to
verify
if the VDisk copies are identical. You can run this option, starting
at different
Logical Block Addresses (LBAs), to count the number of differences
on a VDisk.
- Resync copies with primary
- Select this option to synchronize sectors on the copy that
are not identical to sectors on the primary VDisk copy. Synchronization
makes
the selected copy identical to the primary VDisk copy. Use this action
if
you are sure the primary VDisk copy data is correct, or that your
host applications
can handle incorrect data.
- Create virtual
medium error
- Select this option to place virtual medium errors
where differences
are found. Use this option if you are unsure what the correct data
is, and
do not want an incorrect version of the data used.
- Starting Logical Block Address
(LBA)
- Specify a starting LBA for the selected
verification process.
The LBA is a block number on a disk. You can enter an LBA value from
0 to
full disk size minus one.
Actions
The
following actions are available:
- OK
- Click
this button to begin the verification process. After the verification
process has started you can go to for details on
it completion.
- Cancel
- Click this
button to exit the panel without start the verification process.