Western Digital WD Ultrastar Enterprise HDD 18TB 3.5' SATA 512MB 7200RPM 512E SE NP3 DC HC550 24x7 600MB Buffer 2.5mil hrs MTBF 5yrs WUH721818ALE6L4OVERVIEWLet Your Data Thrive with Ultrastar Quality, Capacity, and Power Efficiency - Delivering highly dependable performance to any storage environment, Ultrastar hard drives are designed for demanding workloads (up to 550TB per year), 10 times the workload rating of desktop drives. Ultrastar drives employ advanced technologies for enterprise-class reliability and power efficiency, to deliver a lower total cost of ownership, so you can safeguard more of your valuable data. Western Digital is dedicated to providing a complete portfolio of hard drives to create environments for your data to thrive.. Highlights - Our most popular Ultrastar SATA models - Full range of capacities (1TB to 14TB)High workload rating, 10X higher than desktop drives, for 24x7 operation - Applications and Workloads - Cloud applications and distributed file systems like Apache Hadoop?? to support Big Data analytics - Bulk storage using Object storage solutions like Ceph??? and Open - Stack Swift - Direct & Network Attached Storage (DAS & NAS), RAID storage - Industrial or Surveillance Applications - Entry Server Storage - Get More From Your Data re driving the innovation necessary to help you capture, preserve, and access that data so you can unlock its full potential. - More Details please check Datasheet - 33nGzcN