The WD Ultrastar 14 TB SAS HDD is a high-capacity, enterprise-grade hard disk drive designed for server, storage array, and data-center environments that require reliable, large-scale data storage. Built as part of Western Digital’s Ultrastar DC HC530 / HC555 series, this 14 TB drive uses a 12 Gb/s SAS interface and a 7200 RPM spindle speed to deliver strong throughput, excellent reliability, and efficient power use for demanding workloads such as cloud storage, virtualization, backup servers, and large data repositories.
Ultrastar drives employ HelioSeal® helium technology to reduce turbulence inside the drive, lowering power consumption and enabling high capacities while maintaining mechanical reliability. They are engineered for 24×7 operation and high workload environments.
14 TB Capacity — large storage for data centers, archival, and bulk storage tiers.
SAS 12 Gb/s Interface — high-speed, enterprise-grade connectivity for servers and arrays.
7200 RPM Spindle Speed — balanced performance and power efficiency for large sequential workloads.
512 MB Cache Buffer — improves sustained transfer and command queuing.
HelioSeal® Helium Technology — reduces internal friction and power use while enabling higher capacities.
Two-Dimensional Magnetic Recording (TDMR) and dual-stage microactuator — enhances head positioning accuracy and reliability in dense drive arrays.
Rotational Vibration Safeguard (RVS) — helps maintain performance in multi-drive chassis.
Conventional Magnetic Recording (CMR) — preferred for enterprise workloads due to consistent performance and reliability.
MTBF ~2.5 M Hours — industry-leading reliability suited for continuous operation.
Annualized Failure Rate ~0.35% — robust for heavy enterprise use.
Workload Rating (~550 TB/year) — supports intensive data center workloads.
5-Year Limited Warranty — long support period for enterprise deployments.
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