WD RED Pro 4TB WD4006FFBX SATA 6Gb/s Internal 3.5" 7200 rpm 256MB

WD Red Pro 4TB WD4006FFBX — NAS Hard Drive

In the realm of enterprise NAS systems, there is no room for compromise. This 4TB WD Red Pro hard drive is designed for 24/7 operation within demanding, multi-user NAS environments utilizing RAID arrays. Featuring CMR (Conventional Magnetic Recording) technology, it delivers consistent write performance and reliable data recovery. With a rotational speed of 7,200 RPM, transfer rates of up to 217 MB/s, and a 256 MB cache, it is built to handle heavy workloads. Furthermore, it is rated for an annual workload of up to 550 TB and offers a Mean Time Between Failures (MTBF) of up to 2.5 million hours, ensuring long-term reliability.

Optimized for RAID-Enabled NAS Systems

The WD Red Pro drive incorporates NASware technology, which optimizes performance and compatibility specifically for NAS environments. This technology ensures seamless integration with RAID arrays—a critical factor for smooth operation in multi-drive systems. The TLER (Time-Limited Error Recovery) feature minimizes the risk of a drive being dropped from a RAID array by limiting the time spent on error recovery, which is essential for maintaining continuous data operations.

Vibration Protection and Reliability

Equipped with Rotational Vibration Safeguard (RVS) technology, the drive is protected against the rotational vibrations commonly encountered in densely packed NAS chassis. Multi-axis shock sensors and dynamic head-height adjustment ensure stable performance and protect data integrity. These features contribute to long-term reliability in the demanding environments of enterprise-class storage.

Key Differences from WD Red Plus

WD Red Pro drives deliver higher performance thanks to a rotational speed of 7,200 RPM and are rated for a higher workload of up to 550 TB/year, whereas WD Red Plus models operate at a lower rotational speed (5,400-5,640 RPM) and handle a maximum of 180 TB/year. WD Red Pro is the ideal choice for larger, multi-bay NAS systems where reliability and performance are critical requirements.

Technical Specifications

• Capacity: 4 TB
• Recording Technology: CMR
• Interface: SATA 6 Gb/s
• Form Factor: 3.5”
• Rotational Speed: 7,200 RPM
• Cache: 256 MB
• Transfer Rate: up to 217 MB/s
• Workload: up to 550 TB/year
• MTBF: up to 2,500,000 hours
• Technologies: NASware, TLER, OptiNAND, ArmorCache
• Dimensions: 147 × 101.6 × 26.1 mm
• Weight: 715 g