RAID level 60 - striping over RAID 6 sets
RAID 60 is striped over more than one span of physical disks that are configured as a RAID 6. For example, a RAID 6 disk group that is implemented with four physical disks and then continues on with a disk group of four more physical disks would be a RAID 60.

RAID 60 characteristics:
- Groups n*s disks as one large virtual disk with a capacity of s*(n-2) disks, where s is the number of spans and n is the number of disks within each span.
- Redundant information (parity) is alternately stored on all disks of each RAID 6 span.
- Better read performance, but slower write performance.
- Increased redundancy provides greater data protection than a RAID 50.
- It requires proportionally as a parity information as RAID 6.
- Two disks per span are required for parity. RAID 60 is more expensive in terms of disk space.