Western Digital WD50EFRX 5TB SATA Hard Drive

Western Digital Part #/MPN: WD50EFRX

DiscTech Item #: WDC-WD50EFRX-BN-3Y

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Enterprise Grade

Capacity: 5TB

Speed: 5,400RPM

Interface Types: SATA

Form Factor: 3.5inx1.0in LFF Hard Drive

Sector Size: 512 / 512e

Sustained Throughput: 170

Electrical Interface: SATA 600 - 6.0Gbps

On-Board Cache: 64MB

Western Digital Red WD50EFRX 5TB / 5000GB 6Gbps 5400 RPM / IntelliPower NAS / Network Attached SATA / Serial ATA Hard Disk Drive - Brand New

WD Red NAS Storage
Storage for 1 to 8 bay NAS solutions

WD Red is designed specifically for NAS systems that have 1 to 8 drive bays in both 3.5-inch and 2.5-inch form factors. The drives are designed and extensively tested for compatibility in the unique 24x7 operating environment and for the demanding system requirements of home and small office NAS.

Fill your NAS with WD Red, then fill it with awesome.
There’s an industry-leading WD Red drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 8 TB, WD Red offers a wide array of solutions for customers looking to build the biggest, best-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.

Exclusive NASware™ 3.0
Not just any drive will do. In single bay to 8-bay NAS systems, WD Red raises the bar. Get as much as 64 TB capacity, and with WD’s exclusive NASware 3.0, you can optimize every single one of them. Built into every WD Red 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
Our exclusive advanced firmware Desktop drives aren’t purpose built for NAS. But WD Red drives with NASware are. Our exclusive technology takes the guesswork out of selecting a drive. WD Red is for small NAS systems, and our unique algorithm balances performance and reliability in NAS and RAID environments. Simply put, WD Red is the most compatible drive available for NAS enclosures. But don’t take our word for it. WD Red is a reflection of the most extensive NAS partner compatibility-testing list that is available on the market.

Desktop drives vs. WD Red
In a Network Attached Storage device, a desktop hard drive is not designed for NAS environments. Do right by your NAS and choose the drive with an array of features to 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 in those conditions. WD Red is.
  • Error recovery Controls: WD Red NAS hard drives are specifically designed with RAID error recovery control to help reduce failures within the NAS system. Desktop drives are typically not designed for RAID environments where this can be an issue.
  • Noise and Vibration Protection: Designed to operate solo, desktop drives offer little or no protection from the noise and vibration faced in a multi-drive system. WD Red 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 Red drives designed to effortlessly share content to the devices in your home. Red NASware increases your drives’ compatibility with your devices, TV, stereo and more. Live in a connected world.

WD Red for Small Business
Businesses thrive on productivity and efficiency – two of the guiding principles built into the design of WD Red. It’s the hard drive of choice for 1 to 8 bay systems. NASware 3.0 allows for seamless integration with your existing network so WD Red can share and backup files at the speed of your business. And for larger businesses with up to 16 bays, count on WD Red Pro.

WD Red Pro for Big Business
If you’re looking for maximum performance in a heavy use NAS, WD Red Pro delivers the same exceptional performance for the business customer. For NAS environments with 8 to 16 bays, WD Red Pro is designed to handle an increase in workload.

WD Red NAS hard drives are recommended for use in home and small office 1-8 bay NAS systems. For systems that use more than 8 bays, please consider WD Red Pro hard drives.


This drive is compatible with any server that accepts 3.5in x 1.0in (LFF) SATA drives.

WD Red™ NAS Storage
Model/Part No.WD50EFRX
InterfaceSATA 6 Gb/s
Formatted Capacity5TB / 5000GB
Form Factor3.5-inch
Advanced Format (AF)Yes
Native Command QueuingYes
RoHs CompliantYes
Data Transfer Rate (Max)
  • Interface Speed
  • Internal Transfer Rate

  • 6 Gb/s
  • 170 MB/s
  • Cache (MB)64
    Performance Class5400 RPM Class
    Load / Unload Cycles600,000
    Non-Recoverable Read Errors per Bits Read<10 in 10^14
    MTBF (Hours) for 8-16 Bay NAS1,000,000
    12VDC-/+10% (A, Peak)1.75
    5VDC-/+10% (A, Peak) -
    Average Power Requirements (W)
  • Read / Write
  • Idle
  • Standby / Sleep

  • 5.3
  • 3.4
  • 0.4
    Temperature (°C)
  • Operating
  • Non-Operating

  • 0 to 65
  • -40 to 70
  • Shock (Gs)
  • Operating (2 ms, read / write)
  • Operating (2 ms, read)
  • Non-Operating (2 ms)

  • 30
  • 65
  • 250
  • Acoustics (dBA)
  • Idle
  • Seek (Average)

  • 25
  • 28
    Height (in / mm, max)1.028 / 26.1
    Length (in / mm, max)5.787 / 147
    Width (in / mm ± .01 in.)4 / 101.6
    Weight (lb / kg, ± 10%)1.65 / 0.75

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    ROHS Compliant

    Weight: 1.8 lb

    Warranty: 3 Year Manufacturer

    Brand New

    Condition Levels Explained

    The product is brand new.

    3 Year Manufacturer Warranty

    Product Warranties Explained

    The product has a manufacturer warranty for the time period specified.