User's Manual

46 Understanding RAID Concepts
Number of Physical Disks per Virtual Disk
Maximum Number of Virtual Disks per Controller
RAID Level 50 (Striping over RAID 5 sets)
RAID 50 is striping over more than one span of physical disks. For example, a
RAID 5 disk group that is implemented with three physical disks and then
continues on with a disk group of three more physical disks would be a RAID
50.
It is possible to implement RAID 50 even when the hardware does not
directly support it. In this case, you can implement more than one RAID 5
virtual disks and then convert the RAID 5 disks to dynamic disks. You can
then create a dynamic volume that is spanned across all RAID 5 virtual disks.