Asus RS162-E4/RX4 - Manual (Page 127)

ASUS RS162-E4/RX4 -1
Managing hot spares
You may configure one disk as a global hot spare to protect critical data
on the IM/IME volume(s). You may create the hot spare disk at the same
time you create the IM/IME volume. Refer to this section when adding a hot
spare disk on an existing volume.
If a disk on an IM/IME volume fails, the utility automatically rebuilds the
failed disk data on the hot spare. When the failed disk is replaced, the
utility assigns the replacement as the new hot spare.
To create a hot spare:
1. Follow steps 1 ~ 3 of the section “Viewing volume properties.”
2. From the View Array screen, select Manage Array, then press .
3. From the Manage Array screen select Manage Hot Spare, then press
.