WD Ultrastar DC HC550 18TB Enterprise HDD – SAS 12Gb/s, 7200RPM, 512MB Cache | Helium-Sealed, CMR, 2M MTBF for Server & Data Center

The WD Ultrastar DC HC550 18TB is a premium enterprise-grade hard drive engineered for mission-critical data center applications. This high-capacity drive delivers exceptional reliability with a 2 million hour MTBF rating and utilizes helium-sealed technology to reduce power consumption while maximizing storage density. Key features include blazing-fast SAS 12Gb/s connectivity for superior data transfer speeds, consistent 7200RPM performance, and a substantial 512MB cache for optimized workload handling. The drive employs Conventional Magnetic Recording (CMR) technology ensuring broad compatibility and predictable performance across enterprise environments. Its helium-filled design reduces internal friction and turbulence, resulting in lower operating temperatures, reduced power consumption, and enhanced durability. Ideal for hyperscale cloud storage, enterprise servers, and high-performance computing applications where maximum capacity, reliability, and energy efficiency are paramount.