Apple Xserve RAID - Manual (Page 74)

Planning RAID Storage for the Xserve RAID System 75
RAID 3 and 5 Schemes
You can use RAID 3 or 5 with or without a drive module designated as a hot spare on each
controller, or you can create four RAID sets and use Disk Utility to stripe or mirror the sets
on the same or separate controllers.
RAID 3 or 5
RAID 3 or 5
Hot spare
RAID 3 or 5
Hot spare
RAID 3 or 5
RAID 3 or 5 RAID 3 or 5 Disk 1 Disk 2
Appears
as
Disk 1 Disk 2
Appears
as
RAID 1 and 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