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RAID / SAFE33
SAFE33 creates two virtual volumes; one SAFE volume and one BIG
volume. This should be used when you need one volume for critical
data and another for non-critical. It reduces the cost of additional
hard drives in operations where non-critical data could be lost without
severe consequences. If one drive fails the SAFE volume is retrievable,
but the BIG volume is not. When you replace the failed drive, the SAFE
volume is automatically rebuilt to the replacement drive.
When using a SATA host connection, you must have a PM (Port
Multiplier) aware host controller when using SAFE33. If your SATA host
adaptor is not PM aware, then ONLY the SAFE volume will be detected
and the BIG volume will not be accessible. No such limitation exists
when using a USB host connection.
The size of the SAFE volume will be one-third of the size of one hard
drive (if they are equal) or one-third of the size of the smaller (if they
are not equal.) The size of the BIG volume will be the combination of all
remaining capacities.
NOTE: Under “Safe Mode”, if Drive B would start to Rebuild, the Link
LED of Drive B would start to flash.