Specifications

SCSI to SATA RAID Subsystem | Administrator’s Manual S.M.A.R.T. Configuration | en 183
Bosch Security Systems F.01U.027.802 | V1 | 2006.11
Fig. 12.16 Choose Detect Only on SMART Function
Whenever a drive detects symptoms of predictable drive failure, the controller will issue
an error message.
4. The “Detect, Perpetual Clone” Setting
In \View and Edit Configuration Parameters\Drive-side Parameters\Drive Predictable Fail-
ure Mode <SMART>, choose “Detect, Perpetual Clone.”
You should have at least one spare drive for the logical drive (either Local Spare or Global
Spare Drive).
When a drive (logical drive member) detects predictable drive errors, the controller will
“clone” the drive with a spare drive. You may enter the "View and Edit Drives" menu and
click on the spare drive (either Local or Global one). Choose from the menu items if you
want to know the status of the source drive, the cloning progress, or to abort cloning.
Fig. 12.17 Choose Source Drive Status
While the spare drive is mirroring the source drive, any occurrence of drive failure (when
there are no other spare drives) will force the spare drive to give up the mirrored data
and resume its original role – it will become a spare drive again and start rebuilding the
failed drive.
5. The “Detect, Clone + Replace” Function
In \View and Edit Configuration Parameters\Drive-side Parameters\Drive Predictable Fail-
ure Mode <SMART>, choose “Detect, Clone+Replace.”
Make sure you have at least one spare drive to the logical drive. (Either Local Spare Drive
or Global Spare Drive)
When a drive (a logical drive member) detects the predictable drive failure, the controller
will “clone” the drive with a spare drive. After the “clone” process is completed, it will
replace the source drive immediately. The source drive will be identified as a “used
drive.”
If you want to see the progress of cloning, press [ESC] to clear the notification message and
see the status bar.
The source drive’s status will be defined as a “used drive” and will be immediately replaced
and pulled offline. This drive should be replaced with a new one as soon as possible.
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NOTICE!
As a precaution against the untimely failure of yet another drive, when configured as “perpet-
ual clone,” the spare drive will only stay mirrored to the source drive (the drive with signs of
failure), but not replace it until the source drive actually fails.