Oyen Digital DATATALE RC-M4QJ 4-BAY RAID - Manual (Page 66)

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HOTSPARE (MANUAL OR AUTOMATIC REBUILD)
REBUILD
In RAID 1, CLONE, and RAID 5 modes, if one of the hard drives fails and is
replaced with a functional hard drive, it needs to be assigned under Advanced
Mode Menu as the “Spare” before the RAID System will rebuild the Target Disk
(the new functional hard drive or HotSpare) with data from the Source Disk (the
remaining functional hard drive) sector by sector. In RAID 1, CLONE, and RAID 5
modes, if one of the hard drives fails and is already setup as combination with
HotSpare, the RAID System will automatically rebuild the Target Disk (the new
functional hard drive or HotSpare) with data from the Source Disk (the remaining
functional hard drive) sector by sector. After the rebuild is completed, data in the
new hard drive will replace the damaged or non-functioning hard drive. The use
of identical hard drives from the same manufacturer, having the same capacity
and RPM is highly recommended.
Under the RAID MASTER, popup window notifications will appear accordingly:
1. One of the hard drives has failed or is non-functioning.
2. A new hard drive has been inserted and the RAID System is in rebuilding
state.