WD Red Plus 4TB NAS Hard Drive 5400 RPM 128MB Cache SATA 6Gb/s 3.5 Inch – WD40EFZZ

The WD Red Plus 4TB NAS Hard Drive (WD40EFZZ) is designed for reliable 24×7 operation in home, power-user, and small-to-medium business NAS systems. With 4TB storage, 5400 RPM speed, 128MB cache, and SATA 6Gb/s interface, it provides dependable storage for file sharing, backups, media, and RAID-based NAS environments.

Built with WD NASware technology, the drive is optimized for NAS compatibility, performance, and reliability. Its enhanced balance control helps reduce vibration and noise in multi-drive NAS systems, while its power-efficient design helps maintain lower operating temperatures and running costs.

Key Features

• 4TB Storage Capacity for NAS and network storage applications
• 5400 RPM for balanced performance and power efficiency
• 128MB Cache for smooth data handling
• SATA 6Gb/s Interface for reliable connectivity
• 3.5-inch Form Factor compatible with standard NAS systems
• NASware Technology for optimized NAS compatibility and reliability
• 24×7 Operation designed for continuous NAS workloads
• RAID Optimized for multi-drive NAS environments
• Enhanced Balance Control helps reduce vibration and noise
• Power Efficient Design helps reduce heat and operating costs
• 3-Year Limited Warranty

Product Specifications