
WD Red Plus Internal NAS HDD 3.5" - 4TB - WD40EFZZ
Price as of Sep 1, 2026
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Product Details
WD 4TB Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 128 MB Cache, 3.5" - WD40EFZZ Key Highlights 4TB NAS Storage Capacity 5400 RPM Performance SATA III 6 Gb/s Interface CMR Recording Technology 128MB Cache Buffer RAID-Optimized for NAS NASware Technology The WD Red Plus 4TB NAS Internal Hard Drive (WD40EFZZ) is designed specifically for NAS environments that require reliable and efficient storage for continuous operation. With a 4TB capacity and a 5400 RPM rotational speed, this drive delivers stable performance for file storage, backups, and media streaming. Its SATA 6 Gb/s interface and 128MB cache help ensure smooth data transfers and consistent responsiveness for everyday workloads. Built with CMR (Conventional Magnetic Recording) technology, the drive offers dependable write performance and compatibility with RAID configurations, making it ideal for multi-user NAS systems. WD Red Plus drives are engineered to support NAS systems with up to 8 drive bays, ensuring optimized performance in home offices, small businesses, and creative environments where reliable shared storage is essential. For long-term reliability, the drive features NASware technology that improves system compatibility and stability while reducing downtime. With a workload rating of up to 180TB per year and a design intended for 24/7 operation, the WD Red Plus series provides dependable storage for growing data needs, ensuring your NAS system runs smoothly and efficiently. Ideal For Home NAS systems Small office / home office (SOHO) storage RAID-configured NAS environments File sharing and centralized storage Backup and data protection Media streaming servers Small business data storage



