Lenovo Option number : 00FN212 4TB 7.2K 12G 3.5 SAS Server Hard Disk Drive For compatibility of machines, please see below. Certified OEM - BRAND New disk with 2 Year warranty.

HP 1.2TB 12G SAS 10K rpm SFF (2.5-inch) SC Enterprise Hard Drive

DELL 2.4TB SFF 10k 12G SAS Hard disk drive New OEM 2 Year warranty - DELL Certified Disk These are small form factor disks 2.5 complete with G176J Dell tray

Dell KPM5XRUG3T84  3.84TB 12G 2.5 SFF SAS New Hard Disk Drive Hot Plug (RI) Read Intensive disk Genuine Dell OEM firmware disks. New with 2 year warranty. Complete with Dell DXD9H caddy.

DELL 03KP7H 2.4TB 10k Enterprise Class 12G SAS Disk. Advanced Format 14th to 16th Generation SAS Disk. Complete with Dell OEM G14 caddy DXD9H New OEM 2 Year warranty - OEM Certified Disk.

DELL 600GB 12G 10k 3.5 Hybrid SAS Disk For use in Cseries, Rseries, Tseries, Mseries and Nseries. Dell OEM caddy which uses the 9W8C4  hybrid adapter module. New 2 Year warranty - OEM Certified Disk.

Fujitsu Primergy 1.2TB 10K 12G SAS 2.5 PN S26361-F5550-L112 These are small form factor disks, 2.5" and are 15K pm speed. New disk with 2 year warranty.