WESTERN DIGITAL Red Pro NAS 10TB Internal HDD

The Western Digital Red Pro 10TB NAS Internal Hard Drive (model WD103KFBX) is purpose-built for demanding commercial and enterprise NAS environments that run continuously around the clock. Unlike general-purpose desktop drives, this 3.5-inch SATA drive is engineered specifically for high-intensity, multi-user workloads where sustained performance and long-term reliability are non-negotiable. At its core, the WD Red Pro spins at 7200 RPM and delivers sequential transfer speeds of up to 267 MB/s over a SATA 6Gb/s interface, supported by a large 512MB cache that helps smooth out data bursts in busy NAS arrays. It uses Conventional Magnetic Recording (CMR) technology, which is preferred in RAID configurations for its predictable write behaviour and compatibility with RAID error recovery mechanisms. Western Digital's proprietary NASware firmware is built into the drive to fine-tune internal parameters for NAS system workloads, improving both compatibility and performance in multi-bay enclosures. The drive also features Rotational Vibration (RV) sensors that actively detect and counteract vibration introduced by neighbouring drives in a multi-drive chassis, helping maintain read/write accuracy under real-world operating conditions. A multi-axis shock sensor further protects the drive by detecting subtle shock events and adjusting the dynamic fly height technology accordingly. With a rated workload capacity of 550TB per year, a mean time between failures (MTBF) of 2,000,000 hours, and a non-recoverable read error rate of fewer than 1 in 10^15 bits read, this drive is dimensioned for demanding data centre and commercial NAS deployments. It supports Native Command Queuing (NCQ) and Advanced Format (AF) for optimised queue management and sector efficiency. The drive carries a broad set of international regulatory certifications including CE, FCC, BSMI, RCM, UKCA, VCCI, KC, TUV, UL, and CB-Scheme, and is fully RoHS compliant. It is backed by a 5-year limited warranty from Western Digital. Verified Specifications: - Model: WD103KFBX - Capacity: 10TB - Form Factor: 3.5-inch - Interface: SATA 6Gb/s (Serial ATA-600) - Transfer Rate: Up to 267MB/s - Spindle Speed: 7200 RPM - Cache: 512MB - Recording Technology: CMR - Drive Technology: Air - Dimensions: 147mm x 101.6mm x 26.1mm - Weight: 667g - Operating Temperature: 0°C to 65°C - Non-Operating Temperature: -40°C to 70°C - MTBF: 2,000,000 hours - Workload Rate: 550TB/year - Load/Unload Cycles: 600,000 - Non-Recoverable Read Errors: <1 in 10^15 bits read - RV Sensors: Yes - Native Command Queuing: Yes - Advanced Format (AF): Yes - OptiNAND: No - RoHS Compliant: Yes - Warranty: 5 Years