SCALE IT IN GOLD. UP TO TEN TIMES THE WORKLOAD CAPACITY OF DESKTOP DRIVES. Reliability capacity power efficiency and performance for a multitude of Datacenter-specific applications. Robust storage with 24/7 premium customer support. Full Range of Nearline CapacitiesFor the most demanding datacenter environments from entry-level servers to high end enterprise storage systems. High Workload Capability Designed to handle workloads up to 550TB per year which is among the highest workload capability of any 3.5-inch hard drive. High Level of Reliability One of the highest levels of reliability and durability for 24x7x365 operation within the most demanding storage environments. COMPATIBILITY TESTING All WD Gold hard drives are extensively tested across a variety of popular OEM storage systems SATA controllers and host bus adapters to ensure ease of integration for a plug and play solution. DUAL ACTUATOR TECHNOLOGY The primary actuator provides coarse displacement; the secondary actuator fine tunes the head positioning to a higher degree of accuracy..