HP Ultrium 448 SCSI in 1U Rack-mount Kit. Native capacity: 400 Compressed 2:1 GB. Drive device, buffer size: 64; Included. Data transfer rate: 173 Gbit/s. Standard interfaces: Ultra160 LVD SCSI. Dimensions (WxDxH): 428.8 x 641.4 x 43.2 mm, Weight: 11.6 kg