INVEST IN GOLD Featuring up to ten times the workload capacity of desktop drives, WD Gold hard drives are designed from the ground up for enterprise-class reliability, capacity, power efficiency and performance. High workload rating Delivering dependable performance to any storage environment, WD Gold hard drives are designed with a workload rating up to 550TB per year, among the highest of any 3.5-inch hard drive. Enterprise-class storage to rely on With up to 2.5 million hours MTBF, WD Gold hard drives deliver reliability and durability, are built for yearly operation (24x7x365) within the most demanding storage environments. HelioSeal Technology