WD Red Plus 4TB NAS Internal Hard Drive - WD40EFPX

The WD Red Plus WD40EFPX delivers 4TB of reliable storage capacity specifically engineered for network-attached storage systems. This 3.5-inch internal hard drive features 256MB cache and SATA 6Gb/s interface, providing the performance and reliability required for small to medium business NAS environments operating 24x7.

NASware Technology for Optimized Performance

Western Digital's exclusive NASware technology fine-tunes drive parameters to match NAS system workloads, enhancing performance and reliability in multi-drive configurations. This purpose-built technology ensures the drive operates efficiently in RAID-optimized NAS systems, unlike standard desktop drives.

Built for Continuous 24x7 Operation

Designed for always-on NAS environments, the WD40EFPX operates continuously without compromise. The drive handles the demanding workloads of multi-user NAS systems while maintaining consistent performance. With 5400 RPM spindle speed and 180 MBps internal data rate, it balances speed with power efficiency.

Conventional Magnetic Recording (CMR) Technology

This drive utilizes CMR technology, providing superior reliability for NAS applications. CMR ensures better data integrity and performance in RAID configurations compared to alternative recording methods.

Enhanced Vibration Protection

The dual-plane balance control technology reduces vibration and noise in multi-drive systems. This protection extends drive lifespan and maintains performance over time, critical factors in densely populated NAS enclosures.

Power Efficient Design

Engineered to consume less power than previous models, the WD Red Plus reduces operating costs and heat generation. This efficiency is particularly beneficial in thermally challenged NAS boxes while maintaining the bandwidth needed for mixed performance demands.

Technical Specifications

• Capacity: 4TB
• Form Factor: 3.5-inch
• Interface: SATA 6Gb/s (SATA III)
• Cache: 256MB
• Spindle Speed: 5400 RPM
• Data Transfer Rate: 600 MBps
• Internal Data Rate: 180 MBps
• Operating Temperature: 0°C to 65°C
• Sound Emission: 23 dBA
• Dimensions: 101.6 x 147 x 26.1 mm
• Weight: 570g

Compatibility and Warranty

Western Digital partners with major NAS system vendors to ensure compatibility across most NAS enclosures. The WD40EFPX includes RAID error recovery control, reducing failures in multi-bay systems. Backed by a 3-year limited warranty and world-class support services.

• Type Of Drive: HDD
• Physical Drive Size: 3.5
• Connection: SATA III
• Capacity: 4TB
• Drive Classification: NAS
• Packaging: OEM