HGST HDN724040ALE640 - 4TB 3.5" SATA 7,200 RPM 6Gb/s Hard Drive

Western Digital

HGST WUH721816ALE6L4 - HGST 16TB 3.5" SATA 7.2K 6Gb/s Hard Drive

Hitachi

HGST/WD Ultrastar 4TB 7200 RPM 512e SATA 6Gb/s 3.5-Inch Enterprise Hard Drive (HUS726T4TALE6L4)

HITACHI 3.5" 4TB 7.2K SATA 6Gb/s HARD DRIVE

HGST WD 12TB 7200 RPM SATA 6Gb/s 3.5-Inch Enterprise Hard Drive (HUH721212ALE604)

SEAGATE 4TB 6Gb/s 7.2K 128MB 512e SATA 3.5" Hard drive