XtendLan XL-RAID-2123ISSA, User Manual

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USB and eSATA to SATA II RAID Subsystem
User Manual 57
3.7.5 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.
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. Tick on Confirm The
Operation and click on the Submit button. The Checking process will be started.
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 errors, the data
must be backed up to a safe storage. Then the two options can
be selected and redo Check Volume Set to correct the errors.