Dell 85KCH 3TB 7.2k rpm SAS 12Gbps 3.5" Hard Drive offers 3TB Capacity with Enterprise level SAS (Serial Attached SCSI) 3.5 inch Interface for fast and reliable 24/7 access to your server and storage RAID units in your IT infrastructure or Data Center. Dell Branded disk drives are loaded with Dell firmware to ensure reliable data communication between your enterprise components.