WD Red Pro 3.5" 4TB, 7200 RPM, 256MB, SATA III Hard Drive for NAS

The WD Red Pro WD4005FFBX is a 4 TB internal hard drive with a 3.5-inch form factor, engineered for use in mid- to large-scale network-attached storage (NAS) systems. It operates at a spindle speed of 7200 RPM and is equipped with a 256 MB cache to facilitate efficient data access and transfer operations. This drive is specifically validated for multi-bay environments, providing consistent performance in configurations containing 8 to 16 drive bays. Its design focuses on balancing throughput and reliability for business-grade storage.

To ensure stable operation in demanding multi-user settings, the drive incorporates NASware 3.0 firmware, which optimizes performance and error recovery within RAID configurations. Integrated rotational vibration (RV) sensors detect and counteract disturbances from adjacent drives, maintaining consistent throughput in dense storage enclosures. The hardware is built for continuous 24/7 operation and features end-to-end data protection to maintain data integrity from the host to the drive, which is a key consideration for high-uptime environments.

• Storage capacity of 4 TB
• 3.5-inch form factor
• SATA interface with a 6 Gbit/s transfer rate
• 7200 RPM spindle speed
• 256 MB storage drive buffer size
• Designed for NAS systems with 8 to 16 bays
• Engineered for 24/7 continuous operation
• Includes rotational vibration (RV) sensors
• Supports S.M.A.R.T. health monitoring
• Mean Time Between Failures (MTBF) of 2,000,000 hours
• Idle power consumption of 4 W
• Dimensions: 101.6 x 147 x 26.1 mm
• Weight of 720 g