Western Digital Ultrastar DC HC550 18TB 3.5" SATA 7200RPM Data Centre Internal Enterprise NAS Hard Drive

Massive 18TB Capacity with Enterprise-Grade Reliability
Designed for data-intensive environments, this drive offers a substantial 18TB of storage in a standard 3.5" form factor, making it ideal for hyperscale data centers and enterprise storage systems.

Advanced Technologies for Performance and Efficiency
It incorporates Energy-Assisted Magnetic Recording (EAMR) and Triple Stage Actuator (TSA) technologies to enhance areal density and head-positioning accuracy, resulting in improved performance and storage efficiency.

HelioSeal® Technology for Cooler, Quieter Operation
The sixth-generation HelioSeal design replaces air with helium inside the drive, reducing turbulence, vibration, and power consumption while enabling higher capacity and reliability.

High-Speed Data Transfer and Robust Workload Rating
With a 7200 RPM spindle speed, 512MB cache, and up to 269 MB/s transfer rate, the HC550 supports up to 550TB workload per year, ensuring consistent performance under heavy data loads.

Built for Long-Term Use with Enhanced Durability
Featuring a 2.5 million hour MTBF, 600,000 load/unload cycles, and a 0.35% Annualized Failure Rate (AFR), this drive is engineered for long-term deployment in mission-critical environments.