6 TB Toshiba® HDD. Size: 3.5" (Width: 102 mm x Height: 26 mm x Depth / length: 147 mm). Cache of 128 MB. 7,200 rpm. Access time for reading: 4.17 ms. SATA / 600 interface (6 Gbit / s). Power: 15-pin connector. Operation continues 24/7. MTBF: 1,000,000 hours.