RAID 5 is a method of spreading volume data across multiple disk drives. The DS6000™ series supports RAID 5 arrays.
RAID 5 increases performance by supporting concurrent accesses to the multiple DDMs within each logical volume. Data protection is provided by parity, which is stored throughout the drives in the array. If a drive fails, the data on that drive can be restored using all the other drives in the array along with the parity bits that were created when the data was stored.