Users Guide

RAID 6 characteristics:
● Groups n disks as one large virtual disk with a capacity of (n-2) disks.
● Redundant information (parity) is alternately stored on all disks.
● The virtual disk remains functional with up to two disk failures. The data is reconstructed from the surviving disks.
● Better read performance, but slower write performance.
● Increased redundancy for protection of data.
● Two disks per span are required for parity. RAID 6 is more expensive in terms of disk space.
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.
Managing storage devices
223