Check Volume Set - Sans Digital Mobileraid MR8X Detailed User's Manual

SAS-to-SATA II RAID Subsystem

4.3.5 Check Volume Set

Use this function to perform Volume Set consistency check, which verifies the correctness
of redundant data (data blocks and parity blocks) in a Volume Set. This basically means
computing the parity from the data blocks and comparing the results to the contents of
the parity blocks, or computing the data from the parity blocks and comparing the results
to the contents of the data blocks.
NOTE: The Volume Set state must be Normal in order to perform Check
Volume Set. Only RAID levels 3, 5, and 6 supports this function.
To perform Check Volume Set function:
1. Click on the Check Volume Set link.
2. Tick from the list the Volume Set you want to check. Select the Check Volume Set
options.
Check Volume Set Options:
• Scrub Bad Block If Bad Block Found, Assume Parity Data is Good
• Re-compute Parity if Parity Error, Assume Data is Good
NOTE: When the 2 options are not selected, it will only check for
errors. It is recommended to perform Check Volume Set with the 2
options unselected at first. If the result shows error, the two
options can be selected and redo Check Volume Set to correct the
errors.
3. Tick on Confirm The Operation and click on the Submit button. The Checking process
will be started.
The checking percentage can also be viewed by clicking on RaidSet Hierarchy in the
Information menu.
55
Installation and Configuration Manual