WD Red Plus 4TB NAS Hard Drive - Built for Always-On Performance

The WD Red Plus WD40EFZX delivers reliable storage for small to medium-sized business NAS environments and SOHO workloads. This 4TB internal hard drive is specifically engineered for 24/7 operation in multi-bay NAS systems up to 8 bays, providing the performance and durability required for continuous data access.

NASware 3.0 Technology for Enhanced Compatibility

Every WD Red Plus drive features exclusive NASware 3.0 technology, optimizing storage performance through advanced algorithms that balance reliability and compatibility in NAS and RAID environments. This technology improves integration with existing networks and devices, ensuring seamless operation across various NAS configurations including ZFS and other file systems.

Technical Specifications

The WD40EFZX features a 3.5-inch form factor with SATA 6Gb/s interface and 5400 RPM spindle speed, delivering consistent performance for streaming, backup, sharing, and archiving operations. With support for up to 112TB capacity in 8-bay configurations, this drive scales with your storage needs.

3D Active Balance Plus Technology

Enhanced dual-plane balance control technology significantly improves drive performance and reliability in multi-drive systems. This advanced balancing reduces vibration and noise that can degrade performance over time, extending drive lifespan in demanding NAS environments.

Engineered for 24/7 Reliability

Built for always-on NAS systems, the WD Red Plus offers an MTBF of up to 1 million hours. Unlike desktop drives, this NAS-specific drive includes RAID error recovery controls that reduce system failures during array rebuilding and continuous operation.

Purpose-Built for NAS Environments

WD Red Plus drives undergo extensive compatibility testing with NAS enclosure partners, ensuring reliable operation in multi-bay configurations. The drive handles the heat, vibration, and constant workload demands that standard desktop drives cannot sustain, making it the appropriate choice for network-attached storage applications.

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