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Western Digital

Digital Storage Capacity 4 TB
Compatible Devices Desktop
Hard Disk Interface Serial ATA-600
Brand Western Digital
Series WD Red

Fill your NAS with WD RedTM, then fill it with awesome.
There’s a leading edge WD RedTM drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 10TB, WD RedTM drives offer a wide array of solutions for customers looking to build a NAS storage solution. Built for single-bay to 8-bay NAS systems, WD RedTM drives pack the power to store your precious data in one powerhouse unit. With WD RedTM drives, you’re ready for what’s next.

Exclusive NASware 3.0
Not just any drive will do. In single-bay to 8-bay NAS systems, WD RedTM drives raise the bar. Get as much as 80TB capacity, and with WD’s exclusive NASware 3.0 technology, you can optimize every single one of them. Built into every WD RedTM hard drive, NASware 3.0’s advanced technology improves your system’s storage performance by increasing compatibility, integration, upgradeability, and reliability.

Built for optimum NAS compatibility
Desktop drives aren’t purpose-built for NAS. But WD RedTM drives with NASware technology are. Our exclusive technology takes the guesswork out of selecting a drive. WD RedTM drives are for small NAS systems, and our unique algorithm balances performance and reliability in NAS and RAID environments. Simply put, a WD RedTM drive is one of the most compatible drives available for NAS enclosures. But don’t take our word for it. WD RedTM drives are a reflection of extensive NAS partner technology engagement and compatibility- testing resulting in a leading compatibility list for NAS systems.

Desktop drives vs. WD RedTMIn a Network Attached Storage device, a desktop hard drive is not typically designed for NAS environments. Do right by your NAS and choose the drive designed for NAS with an array of features to help preserve your data and maintain optimum performance. Take the following into consideration when choosing a hard drive for your NAS:

  • Compatibility: Without being tested for compatibility with your NAS system, optimum performance is not guaranteed.
  • Reliability: The always-on environment of a NAS or RAID is a hot one. And desktop drives aren’t typically designed and tested under those conditions. WD RedTM drives are.
  • Error recovery controls: WD RedTM NAS hard drives are specifically designed with RAID error recovery control to help reduce failures within the NAS system. Desktop drives are not typically designed for RAID environments.
  • Noise and Vibration Protection: Designed to operate solo, desktop drives typically offer little or no protection from the noise and vibration present in a multi-drive system. WD RedTM drives are designed for multi-bay NAS systems.

WD Red for Home
Stream, backup, share, and organize your digital content at home with a NAS and WD RedTM drives designed to effortlessly share content with the devices in your home. NASware 3.0 technology increases your drives compatibility with your devices, TV, stereo, and more. Live in a connected world.

SKU: WD40EFAX Categories: , ,


Western Digital


Product Name Western Digital NAS WD40EFAX 4TB SATA 256M Cache 3.5 WD Red Bulk Pack
Product Type Hard Drive
Buffer 256 MB
Wireless LAN No
Product Family Red
Drive Interface SATA
Drive Interface Standard SATA/600
Spindle Speed (rpm) 5400
Drive Type Internal
Form Factor 3.5″
Device Supported Storage System
Storage Capacity 4 TB
Environmentally Friendly Yes
Environmental Certification RoHS
Endurance (TBW) 180 TB
Country of Origin Thailand
Height 1″
Width 5.8″
Depth 4″
Product Model WD40EFAX
Product Line Red
Limited Warranty 3 Year
Operating Power Consumption 4.80 W
Manufacturer WD
Manuf Part# WD40EFAX

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