Western Digital Red Pro 18TB NAS Internal Hard Drive

The Western Digital Red Pro 18TB NAS Internal Hard Drive (model WD181KFGX) is engineered for commercial and enterprise NAS environments that demand continuous, high-intensity operation. Running at 7200RPM with CMR (Conventional Magnetic Recording) technology and helium-filled construction, the drive balances high rotational speed with reduced internal air resistance, contributing to both performance and thermal efficiency across sustained workloads. With a 512MB data cache and a maximum sustained transfer rate of up to 272MB/s, the WD Red Pro 18TB handles the demands of simultaneous multi-user access and large sequential data transfers common in collaborative creative production, medium-to-large business workflows, and always-on commercial NAS deployments. The drive connects via SATA with a 6Gb/s interface transfer rate (buffer to host), fitting neatly into existing NAS enclosures that use standard 3.5-inch bays. Western Digital's NASware technology is integrated to fine-tune drive parameters specifically for NAS system workloads, helping maintain performance and reliability in multi-drive configurations. Rotation Vibration (RV) sensors actively monitor and counteract vibration that can be introduced by adjacent drives in densely populated NAS bays, protecting read/write integrity. A multi-axis shock sensor adds an additional layer of protection by detecting shock events and triggering dynamic fly-height compensation. The drive is rated for 550TB/year workload throughput, reflecting its suitability for high-demand, RAID-optimized NAS systems with an unlimited number of bays. Load/unload cycle endurance is rated at 600,000 cycles, and the non-recoverable read error rate is specified at less than 1 in 10^15 bits read — a reliability benchmark appropriate for mission-critical storage. Advanced Format (AF) and Native Command Queuing (NCQ) are both supported, further optimising the drive for modern NAS operating environments. The drive is RoHS compliant and carries certifications including CE, FCC, UL, TUV, VCCI, BSMI, ICES-003/NMB-003, KC, RCM, and UKCA. Verified Specifications: - Capacity: 18TB - Form Factor: 3.5-inch - Interface: SATA (6Gb/s buffer to host) - Spindle Speed: 7200RPM - Recording Technology: CMR - Drive Technology: Helium - Cache: 512MB - Max Transfer Rate: up to 272MB/s - Workload Rating: 550TB/year - MTBF: 2,500,000 hours - Load/Unload Cycles: 600,000 - Non-Recoverable Read Errors: <1 in 10^15 bits read - Operating Temperature: 0°C to 65°C - Non-Operating Temperature: -40°C to 70°C - Dimensions: 147mm x 101.6mm x 26.1mm - RV Sensors: Yes - Advanced Format (AF): Yes - Native Command Queuing: Yes - OptiNAND: No - Warranty: 5 Years Limited - RoHS Compliant: Yes