Promise Technology VessRAID 1840i. Total storage capacity: 16000 GB, RAID levels: 0, 1, 3, 5, 0+1, 6, 10, 50, 60, 1E, Hard drive size: 88.9 mm (3.5 "). Supported network protocols: SMB/CIFS/NFS/FTP/SLP. Security algorithms supported: SSL/TLS. Management protocols: SNMP. Power requirements: 100-240V, 50-60Hz, Power supply: 450 W, Power consumption (typical): 72.3 W