4BAY 1U REDUNDANT POWER SUPPLY

Sans Digital AccuRAID 3U 16 Bay iSCSI to SAS/SATA RAID 6 Rackmount Storage and 4 x 10GbE with Redundant Controllers (AR316ITR)

Sans Digital AccuRAID 3U 16 Bay 8xGbE iSCSI to SAS/SATA RAID 6 Redundant Controller Storage PCI RAID External Hard Drive Enclosure AR316IR - Black/Silver

QNAP VS-8024U-RP-US 8-Bay 2U NVR 24-Channel Redundant Power