WD Red Plus 4TB – 5400 rpm SATA III 3.5" Internal NAS HDD (WD40EFPX)...3 years warranty
 
 
Overview 
The WD Red Plus 4TB NAS hard drive is designed for reliable, continuous operation in multi-bay NAS systems (up to 8 bays). Equipped with 5400 rpm, 256MB cache, and SATA III 6 Gb/s, it delivers stable throughput up to 180 MB/s while maintaining low noise, low vibration, and power efficiency.
Built for 24/7 environments, it offers strong durability thanks to 600,000 load/unload cycles, 1M hours MTBF, 180TB/year workload rating, and RV (Rotation Vibration) sensors for multi-disk stability. With NASware™ technology, it enhances compatibility, performance, and data protection across NAS ecosystems—making it ideal for home offices, professionals, and small to medium businesses.
 
Key Features:
Optimized for NAS Systems
Tailored for RAID-optimized NAS units supporting up to 8 bays, ensuring consistent performance and long-term stability.
NASware™ Technology
Fine-tunes drive parameters to improve compatibility, reduce downtime, and enhance overall system performance.
Reliable 24/7 Operation
Engineered for continuous workloads with strong durability metrics and thermal efficiency.
Quiet & Low Vibration Design
RV sensors proactively counter vibrations in multi-bay systems to maintain performance and extend lifespan.
Energy Efficient
Lower power consumption helps reduce long-term operating costs and heat output.
Tested for NAS Compatibility
Extensively validated with major NAS manufacturers for seamless integration.
 
Conclusion
The WD Red Plus 4TB is a dependable and efficient NAS hard drive engineered for multi-user, 24/7 environments. With NASware™ optimization, low vibration performance, and strong durability ratings, it delivers the reliability required for RAID-based storage, home servers, and professional NAS applications. A solid choice for anyone seeking long-term stability and high-quality data protection.