Raid 0+1; Rebuild - Sabio DM4 User Manual

RAID 0+1

Q: Normally when operating under the RAID 0+1 mode, two HDDs are allowed to
fail without losing the data. Is there any special restrictions or limitations for the
RS-M4QO?
A: As long as the two failed disks are not in the special combination of HDD slots
nos. 2&3 or 1&4, the data can be rebuild once the failed disks are replace with
new ones.

Rebuild

Q: Does the RAID System have to be connected to the host computer when it is
in rebuild mode?
A: No, it does not have to be. The RAID System can support offline rebuild,
which means it can perform the rebuild function without being connected to a
host computer.
JBOD
Q: I have 4 HDDs. Can I use them as separate HDDs on the RAID System?
No, the RAID System does not support the JBOD (Just a Bunch Of Disks) function.
A:
The 4-bay RAID System is specially designed for power users who prefer enhanced
storage capability and advanced RAID features.
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