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WD Red 4TB NAS Internal Hard Disk 5400 RPM WD40EFAX


1. Specifically designed for use in NAS systems with up to 8 bays
2. Tested for 24×7 reliability
3. NASware firmware for compatibility
4. Small and home office NAS systems in a 24×7 enviornment

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WD Red 4TB NAS Internal Hard Disk 5400 RPM WD40EFAX

There’s a WD Red drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 10TB, WD Red offers a wide array of solutions for customers looking to build a high performing NAS storage solution. Built for single-bay to 8-bay NAS systems, WD Red packs the power to store your precious data in one powerhouse unit. With WD Red, you’re ready for what’s next.

The drive for NAS
Desktop drives aren’t typically tested or designed for the rigors of a NAS system. Do right by your NAS and choose the drive with an array of features to help preserve your data and maintain optimum performance.

Built for NAS Compatibility
WD Red drives with NASware 3.0 technology are purpose-built to balance performance and reliability in NAS and RAID environments.

Keep it Cool
The always-on environment of a NAS or RAID is a hot one. WD Red drives are engineered to run cool and quiet while offering optimum compatibility for demanding 24×7 environments.

Stream, backup, organize and effortlessly share your digital content to your TV, PC and more. NASware technology increases your drives’ compatibility with your NAS system, for better playback with your devices.

Businesses thrive on productivity and efficiency, two guiding principles built into the design of the WD Red drive. Share and backup files at the speed of your business with a WD Red drive in your NAS.

Looking for maximum performance in a heavy use NAS? The WD Red Pro drive is designed to handle an increase in workload and system demand and features a 5-year limited warranty.

Designed for NAS
Desktop drives aren’t purpose-built for NAS. But WD Red drives with NASware 3.0 are. Our exclusive technology takes the guesswork out of selecting a drive. We can help you find the perfect storage for your NAS system.

Weight 1 kg

HDD Cache
64 MB

HDD Form Factor

HDD Speed
5400 RPM

HDD Capacity
4 TB

3 Years


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