Free Shipping! WD 8TB Storage Capacity (2 x 4TB), 3.5" Form Factor, SATA III 6 Gb/s Interface, 256MB Cache, 5400 rpm, Data Transfer Speeds up to 180 MB/s, 600,000 Load/Unload Cycles, 1 Million Hours MTBF, Dual-Plane Balance Control, Noise and Vibration...