Western Digital WD8003FFBX, Capacity 8TB, 7,200RPM, SATA, 3.5inx1.0in LFF Hard Drive, 512 / 512e, SATA 600 - 6.0Gbps, Cache 256MB. Designed specifically with medium or large scale business customers in mind, WD Red Pro drives are available for up to 24-bay NAS systems. Engineered to handle high-intensity workloads1 in 24x7 environments.