2U rack, 256MB cache, 4x 2Gb Fibre, - plus. SFP Modules - OS independent computer recognizes RAID system as a large hard drive and has only one SCSI address user-friendly RAIDWatch ™ RAID management software hot swap" hard drives and power supplies, LAN port for RAID management via Ethernet standard 19 ' 'rackmount with 2 units 88 (2U) x 482 x 487 mm (H x W x D) RAID level: 0, 1, 0 +1, 3, 5, 10, 30, 50, JBOD, NRAID support of "hot spare hard drive 2x 350W redundant power supplies up to 1GB cache (128MB installed) RISC processor with 400MHz and 256kB L2 Cache Host Interface: 2x 2Gbit / s Fibre Channel (SFP ports), 2x 200MB / s controller: Single Controller