The active active PRO FCa has two very fast 4Gb Fibre Channel ports connected to a high performance RAID controller based on a high power RISC storage processor with embedded RAID 6 XOR engine. In the event of a failed controller the active active PRO FCa will continue to operate on the surviving controller. Supporting the latest in RAID protection technology, the PRO FCa supports all standard RAID levels; 0 for striping, 1 for disk mirroring, 5 for efficient balance of drive protection and performance as well as the latest RAID 6 double disk protection for enterprise class requirements.