NetApp RAID-DP?: Dual-Parity RAID 6 Protection Without Compromise
As disk drive densities continue to increase, and companies adopt SATA disk drives to reduce storage costs, data loss due to concurrent disk drive failure and error in a RAID group has become a growing risk. Single-parity RAID 5 does not protect against such double-failure events. While RAID 1+0 and conventional RAID 6 do provide sufficient protection, each has serious drawbacks - RAID 1+0 requires nearly twice the number of disk drives, and conventional RAID 6 slows performance significantly. The solution is NetApp RAID-DP, an advanced RAID 6 technology.