The Western Digital Ultrastar DC HC550 18TB Enterprise Hard Drive (WUH721818ALE6L4) is engineered for high-capacity, 24/7 data center environments. With an 18TB capacity, this 3.5-inch drive operates at a spindle speed of 7200 RPM, ensuring efficient data retrieval and storage. It features a 512MB cache and utilizes a SATA 6Gb/s interface, providing reliable and fast data transfer rates suitable for demanding applications. Designed for continuous operation, the Ultrastar DC HC550 supports heavy workloads, making it ideal for cloud storage, hyperscale data centers, and big data analytics. Its helium-sealed design reduces power consumption and weight, contributing to lower total cost of ownership. Backed by a 5-year limited warranty, this drive offers exceptional durability and reliability for enterprise storage needs.