WD Ultrastar DC HC555 3.5" 14TB, 7200 RPM, 512MB, 550 WRL, SAS Hard Drive, Enterprise

The Western Digital Ultrastar DC HC555 is a 14 TB internal hard drive engineered for enterprise data centers and high-capacity storage systems. It is built to operate continuously, providing reliable storage for servers and workstations handling intensive workloads. The drive connects via a SAS 12Gb/s interface and operates at a spindle speed of 7200 RPM, which supports consistent data throughput. Its design prioritizes data integrity and operational stability in demanding, multi-drive environments where uptime is a primary concern.

Performance is characterized by sequential read speeds up to 269 MB/s and write speeds up to 257 MB/s, managed by a 512 MB cache that optimizes data access. With an average latency of 4.16 ms, it offers predictable response times for various applications. This model is rated for a workload of 550 TB per year and has a Mean Time Between Failures (MTBF) of 2.5 million hours, indicating its suitability for long-term use. Integrated rotational vibration sensors further contribute to its reliability by mitigating the effects of vibration in dense storage arrays.

• 14 TB storage capacity
• 3.5-inch form factor
• SAS interface with 12 Gbit/s transfer rate
• 7200 RPM spindle speed
• 512 MB cache size
• Supports 24/7 continuous operation
• Designed for server and workstation environments
• 5.4 W idle power consumption
• 101.6 mm x 147 mm x 26.1 mm dimensions
• Weighs 679 g