Product specifications

S.M.A.R.T. Configuration
9-11
4a. In \View and Edit Configuration Parameters\Drive-side
Parameters\Drive Predictable Failure Mode <SMART>,
choose “Detect, Perpetual Clone.”
4b. You should have at least one spare drive for the logical
drive (either Local Spare or Global Spare Drive).
4c. 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.
Figure 9 – 17: Choose Source Drive Status
NOTE:
 As a precaution against the untimely failure of yet another drive, when
configured as “perpetual 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.
4d. 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.
Step 5. The “Detect, Clone + Replace” Function
5a. In \View and Edit Configuration Parameters\Drive-side
Parameters\Drive Predictable Failure Mode <SMART>,
choose “Detect, Clone+Replace.”
5b. Make sure you have at least one spare drive to the logical
drive. (Either Local Spare Drive or Global Spare Drive)