SANS DIGITAL AccuRAID AR424I RAID 0/1/0+1/3/5/6/30/50/60, JBOD 24 x Hot-Swappable 3.5 Drive Bays 4U 24 Bay 4xGbE iSCSI to SAS/SATA RAID 6 Upgradable to Redundant Controller Drive: SAS & SATA Ethernet Interface: Gigabit Ethernet 1Gb x 4 Hot-spares: Yes Power Supply: 500W x 3 Redundant power supplies w/ PFC Dimensions: 19 x 20.5 x 7 Weight: 50 lbs. Package Contents: Rail Bracket(1 Set) Power Cords (2) Serial Cable (1) Ethernet Cable (1) Hard Drive Mounting Screws and trays CD and User Guide (1)