This listing is for a bundle of 12 x 4TB = 48TB Total capacity. Note these are SAS disks.
30 Day Warranty
Capacity: 48TB (12 X 4TB)
Speed: 7,200RPM
Interface Types: SAS Serial Attached SCSI
Form Factor: 3.5inx1.0in LFF Hard Drive
Sector Size: 512 / 512e
Sustained Throughput: 182
Electrical Interface: SAS-2 Serial Attached SCSI v2 - 6.0Gbps
On-Board Cache: 32MB