Sansdigital Ar212F4 - 2U 12 Bay Rackmount Sata To 4Gbit Fc Raid 6 Storage Rtl Features Architecture -- Intel 80321400MHz 64-bit RISC processor with 256MB on-board ECC cache memory (upgradeable to 1GB) -- Areca SATA II RAID 6 ASIC engine provides the highest level of data protection -- Tagged command queuing for 256 commands, allows for overlapping data streams