Apple Xserve RAID - Manual (Page 75)

76 Chapter 8
You can also set up three mirrored pairs and one hot spare with RAID 1 on one controller,
and stripe all the drives together on the other controller using RAID 0, 3, or 5. (The spare is
only for the drives on the controller where the spare is located.)
RAID 3 or 5
Mirrors RAID 1 RAID 0
or
RAID 3 or 5
Hot spare
Disk 3
Appears
as
Disk 1 Disk 2
Disk 4