Western Digital WD40EFZX WD Red Plus 4TB SATA 6Gb/s 3.5" HDD

Western Digital WD40EFZX WD Red Plus 4TB SATA 6Gb/s 3.5" HDD has risen 7.3% over the last 30 days, currently at £189.97.

Price last checked: 18 Apr 2026, 17:00

• Stream, backup, share, and organize your digital content with a NAS and WD Red Plus drives designed to effortlessly share content with the devices at your home or business. NASware 3.0 technology increases your drives’ compatibility with your existing network and devices. For larger businesses with up to 24 bays, count on WD Red Pro drives to deliver exceptional performance.
• Not just any drive will do. Get up to 112TB of capacity in your 8-bay NAS system and with Western Digital's exclusive NASware 3.0 technology, you can optimize each and every drive. Built into every WD Red Plus hard drive, NASware 3.0’s advanced technology improves storage performance by increasing compatibility, integration, upgradeability, and reliability.
• WD Red Plus drives with NASware technology takes the guesswork out of selecting a drive. Optimized for NAS systems, our unique algorithm balances performance and reliability in NAS and RAID environments. Simply put, a WD Red Plus drive is one of the most compatible drives available for NAS enclosures. But don’t take our word for it. WD Red Plus drives are a reflection of extensive NAS partner technology engagement and compatibility-testing.
• If you’re looking for heavy duty performance for NAS, WD Red Pro drives deliver exceptional performance for the medium to large business customer with extreme demands. For NAS environments with 9 to 24 bays, WD Red Pro drives deliver uncompromising performance and unwavering assurance backed by a 5-year limited warranty.
• Our enhanced dual-plane balance control technology significantly improves the overall drive performance and reliability. Hard drives that are not properly balanced may cause excessive vibration and noise in a multi-drive system, reduce the hard drive life span, and degrade the performance over time.