Apple Xserve RAID - Manual (Page 76)

Planning RAID Storage for the Xserve RAID System 77
RAID 30 and 50 Schemes
You can configure two RAID 5 sets using the RAID controller and then use software (Disk
Utility) to stripe those two sets.
RAID 30 or 50
RAID 3 or 5
Use software RAID to stripe two RAID 3 or 5 sets,
which appear as one maximum capacity RAID set.
RAID 3 or 5 Disk 1
Appears
as
RAID 30 or 50
RAID 3 or 5
RAID 3 or 5
RAID 3 or 5
RAID 3 or 5
You can use software RAID to stripe like
pairs on the same or separate controllers.
Disk 1
Appears
as
RAID 31 or 51
RAID 3 or 5
RAID 3 or 5
RAID 3 or 5
RAID 3 or 5
You can use software RAID to mirror like
pairs on the same or separate controllers.
Disk 1
Appears
as