System information

Using the RAID GUI
2-33
2.7.8 Cloning hard disks
When a hard disk is likely to become faulty or develop errors, for example, when the number of reported errors or bad
sectors of a physical disk increases over a certain threshold, or a disk reports SMART warning, you can copy all the data
on the disk to another disk.
To clone a hard disk, do the following:
1. Select Maintenance Utilities > HDD Clone from the main menu.
2. Click Clone and specify the following disk cloning options.
1. Click Apply. The task will start according to the specified time.
To cancel hard disk cloning, do the following:
2. Select the task(s) and click Stop to abort disk cloning. A confirmation prompt displays. Click Confirm to cancel the
cloning task.
The target disk will become an unused disk. If there is a degraded disk group and auto-spare option is on, the target disk
will be used for rebuilding.
2.7.9 Scrubbing
This feature supports parity check and recovery for disk groups, logical disks, and hard disks. Bad sectors will be
reported when detected.
To perform disk scrubbing on a disk group, do the following:
1. Select Maintenance Utilities > Scrubbing from the main menu.
2. Click Scrub and specify the following options for a disk scrubbing task.
Source Disk Select a source disk you want to clone. The disk must not be in an NRAID disk
group.
Target Disk Select the target disk to be the clone. The disk must be either unused, a global
spare, or a local spare of the same disk group as the Source Disk.
Schedule Immediately: The task will start immediately.
Once: The task will start on the specified date and time.
Automatic Resume During cloning, if the target disk fails, the controller will use another disk and
resume cloning. [The Auto Spare Control option (see 2.7.16 Miscellaneous on
page 2-37) must be set to On.] The following is the order of disks used to resume
cloning:
1. Local spare disks
2. Global spare disks
3. Unused disks
If there is no disk to resume cloning, or this option is not specified, cloning is
aborted when the target disk fails.
Note
1. If there is disk scrubbing task or parity regeneration task in the disk group of the source disk,
the task is aborted and cloning is started.
2. If the disk group of the source disk contains faulty disks, cloning is suspended until the disk
group completely rebuilds its disks.
Target Type Select either HDD or DG as the scrubbing disk type.
HDD: Specify an HDD ID for scrubbing.
DG: Specify a DG ID and an LD ID/All LDs for scrubbing.
Parity Check This option is only available for parity-based RAID level LDs.
None: No parity check is performed.
Check Only: The controller checks the parity for logical disks.
Regenerate: Any parity inconsistency detected is regenerated by the controller.