Seagate Barracuda 4TB Internal SATA Hard Drive for Desktops ST4000DMA04 - Best Buy
Amazon.com: Seagate BarraCuda Pro 4TB Internal Hard Drive Performance HDD – 3.5 Inch SATA 6 Gb/s 7200 RPM 128MB Cache for Computer Desktop PC, Data Recovery (ST4000DM006) : Electronics