Seagate Bare Drives BarraCuda 1TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s 7200 RPM 64MB Cache for Computer Desktop PC – Frustration Free Packaging ST1000DMZ10/DM010

Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004)

Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ

Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 3.5" - WD40EZZX

Western Digital 3TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 64 MB Cache, 3.5" - WD30EFRX