Amazon.com: HP 695842-001 4TB SAS Hard Drive Disk (HDD) - 7,200 RPM, 3.5-inch form factor, SmartDrive Carier (SC), Midline (MDL), 6Gb per second Transfer Rate (TR) : Electronics
ST4000NM0023 Seagate 4TB 3.5 inch SAS Server Enterprise Hard Drive
DELL 529FG - 4TB 7.2K 3.5 SAS 6G ST4000NM0023 by DELL