Installation guide

Software Operation Manual
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4.6.4.3 Volume Write Protection
When "Volume Write Protection" is enabled on the "Modify Volume Set", host
commands fail if they are issued to a volume in that RAID controller and attempt to
modify a volume's data or attributes. Volume Write Protection is used primarily for
customer-initiated disaster recovery testing.
4.6.5 Check Volume Set
To check a volume set from a RAID set:
(1). Click on the “Check Volume Set” link.
(2). Click on the volume set from the list that you wish to check.
Click on “Confirm The Operation” and click on the “Submit” button. Use this option to
verify the correctness of the redundant data in a volume set. For example, in a system
with dedicated parity, volume set check means computing the parity of the data disk
drives and comparing the results to the contents of the dedicated parity disk drive.
The checking percentage can also be viewed by clicking on “Raid Set Hierarchy” in
the main menu.
Scrub Bad Block If Bad Block Is Found, Assume Parity Data Is Good option: the
check button will be shown when Data disk found bad blocks, and if selected, the
RAID controller will regenerate data from Parity disk to data disk, if check button is not
selected, RAID controller will report error only.
Re-compute Parity If Parity Error Is Found, Assume Data Is Good option: check
button will be shown when Parity Data disk found bad blocks, and if selected, RAID
controller will regenerate data from Data disk to Parity disk, if check button is not
selected RAID controller will report error only.
4.6.6 Scheduled Volume Checking
This function can setup a schedule so consistency checks are run automatically at
regularly scheduled intervals. If there is a discrepancy found, it will record the error on
the system event log. The controller will base on the user selection scrub bad block or
re-compute parity to recovery the data. The recommended interval for checking
consistency in RAID drives can set on “Scheduler” option. User can specify