WD 18TB UltraStar DC HC550 High-Capacity Enterprise HDD – 7200rpm SATA III

The WD 18TB UltraStar DC HC550 7200 rpm SATA III 3.5″ Internal HDD is designed for enterprise environments that have intensive data and storage needs. With an 18TB storage capacity and 3.5″ form factor, this high-performance drive boasts a SATA III 6 Gb/s interface, 7200 rpm rotational speed, and 512MB cache, ensuring uninterrupted data transfers at speeds of up to 269 MB/s. As a professional-grade drive, it features an MTBF rating of 2.5 million hours, an Annualized Failure Rate (AFR) of 0.35%, 600,000 load/unload cycles, and an error rate of 1 in 10¹⁵ non-recoverable bits read, handling workloads of up to 550TB per year. WD’s HelioSeal technology enhances efficiency, reliability, and capacity by replacing the air inside the drive with helium, reducing vibration and power requirements while maintaining cooler operating temperatures.