WD Red 14TB NAS Drives – WD140EFFX and WD141KFGX

The WD Red NAS Hard Drive Series hits 14TB

Good news for those that are looking for the biggest and best hard drives for their NAS Drive(Synology, QNAP, Asustor, etc) with the release of a new and larger addition to the WD Red HDD series, now in 14 Terabytes of size. The WD Red range of drives has been around for a number of years now and was one of the earliest NAS optimized hard drives available to both home and business users. Up until then, users were in the habit of using regular hard drives that, although workable, were not designed for the 24×7 activity, sporadic access and RAID durability that network Attached Storage (NAS) requires. Now available in both WD Red for home and small business, as well as WD Red Pro for larger and more enterprise RAID servers, the new 14TB generation of NAS drives will come as a fantastic new build or upgrade options who are brand loyal. In the last 12-18 months, we have witnessed a shift in the NAS media market between WD and Seagate, the latter traditionally arriving in larger capacities and lower prices per TB, but with the recent release of the 12TB range and 14TB now, things could change. So, why should you buy the WD Red WD140EFFX and WD141KFGX 14TB Drive for your NAS?


WD Red 14TB Pro WD141KFGX

WD Red Whole Range for NAS HDD

What are the specifications of the WD Red WD140EFFX and WD141KFGX 14TB HDD?

WD Red 14TB NAS hard drives are built for up to 8-bay NAS systems, with the WD Red Pro WD141KFGX designed for servers with upto 24-Bays, packing the power to store your precious data in one powerhouse unit, or a modest 2-Bay. Increase the efficiency and productivity of your business with WD Red Pro drives (though at 14TB, many home users will populate smaller 2-4 Bay devices and still have high capacity in RAID 1/5. Hardware specifications of the WD Red WD140EFFX and WD141KFGX 14TB Drive are:


WD Red Pro WD141KFGX

14TB Capacity 14TB Capacity
256MB Disk Cache 256MB Disk Cache
SATA – 6Gb/s SATA – 6Gb/s
180TB/year Workload 300TB/year Workload
196MB/s Transfer 240MB/s Transfer
5400RPM 7200RPM
1Million MTBF 1Million MTBF
1-8 Bay NAS Recommended 1-24 Bay NAS Recommended
3 Year Warranty 5 Year Warranty

In Brief, the  WD Red NAS Hard Drive range has always featured:

  • Built for NAS compatibility
  • Featuring NASware™ 3.0 technology
  • Engineered to run cool and quiet
  • Designed for RAID environments
  • Noise and Vibration Protection
  • Supporting Synology and QNAP upto 8-bay NAS Systems (WD Red)
  • Medium to Large NAS environments up to 24 bay (WD Red Pro)
  • RAID Configurations from RAID 0 and 1, upto RAID 5, 6, 10 and SHR
  • 3 Year Warranty with WD Rd and 5yr with WDR= Red Pro

What are the Differences Between the WD Red and WD Red Pro 14TB Drive?

Regardless of which WD Red 14TB hard drive you buy for your NAS server, it is worth highlighting that this designed to work in that environment, it is just a question of the extent to which you use your hardware and the scale of your data storage operation. Until recently, the simple difference between WD Red and WD Red Pro as far as the consumer was concerned was that the former is designed for NAS drives with upto 8 bays and the latter for upto 24 Bays. However, as the capacities available have grown in size, and the price between Pro and Non-Pro drive media has diminished, NAS buyers are now looking at the rest of the differences between them, considering the more rugged PRO drive in simple 2/4Bay NAS devices, such as the Synology TS-251B and Synology DS220+ (come on already and release it!). Here are the key reasons to buy the WD Red 14TB WD140EFFX NAS hard drive or WD Red Pro WD141KFGX.

WD Red is for:

  • Lower Price per Terabyte (Approx £25-30 per TB, compared with £35+ per TB on PRO)
  • Quieter Operation
  • Using a NAS with less than 8 Bay for Home use

WD Red Pro is for:

  • Longer warranty cover at 5yrs on Pro vs 3yrs on normal
  • Faster Data Access at 7200RPM on Pro vs 5400RPM on normal
  • Harder/high-end business access users
  • Better Construction quality, to hold up to rigours of harder work
  • Larger NAS devices with upto 24Bays (Rackmounts)

Here is a guide to understanding the difference between a WD Red NAS Drive and a WD Red Pro hard Drive:

WD Red or WD Red Pro – What is the Difference?

How Much will the WD Red and WD Red Pro 14TB Drive Cost?

We do not have a confirmed price on the newer and larger WD Red capacity drives, but we can see the costs of current generation WD Red and WD Red Pro hard drives for NAS and make an educated guess. With WD Red arriving at around £25-30 per Terabyte of storage (ex.VAT), we estimate that the WD140EFFX will retail around £370 per HDD. Whereas the WD Red Pro has a typical price per terabyte in 2019 of £35 ex.VAT, which would result in the WD Red Pro WD141KFGX arriving to buy at a price of £490-500 per drive.

When will the WD Red and WD Red Pro 14TB Drive Be Released?

We expect to see availability for sale of the WD Red 14TB WD140EFFX NAS hard drive or WD Red Pro WD141KFGX before the end of 2019 and more likely in November. Stock will almost certainly be a little thin on the ground, so we recommend that you use the link below to check both the price (when available) and further information on specifications.


WD Red 14TB Pro WD141KFGX

WD Red Whole Range for NAS HDD


Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 1,750 other subscribers

Get an alert every time something gets added to this specific article!

Want to follow specific category? 📧 Subscribe

This description contains links to Amazon. These links will take you to some of the products mentioned in today's content. As an Amazon Associate, I earn from qualifying purchases. Visit the NASCompares Deal Finder to find the best place to buy this device in your region, based on Service, Support and Reputation - Just Search for your NAS Drive in the Box Below

Need Advice on Data Storage from an Expert?

Finally, for free advice about your setup, just leave a message in the comments below here at NASCompares.com and we will get back to you. Need Help? Where possible (and where appropriate) please provide as much information about your requirements, as then I can arrange the best answer and solution to your needs. Do not worry about your e-mail address being required, it will NOT be used in a mailing list and will NOT be used in any way other than to respond to your enquiry.

    TRY CHAT Terms and Conditions
    If you like this service, please consider supporting us. We use affiliate links on the blog allowing NAScompares information and advice service to be free of charge to you.Anything you purchase on the day you click on our links will generate a small commission which isused to run the website. Here is a link for Amazon and B&H.You can also get me a ☕ Ko-fi or old school Paypal. Thanks!To find out more about how to support this advice service check HEREIf you need to fix or configure a NAS, check Fiver Have you thought about helping others with your knowledge? Find Instructions Here  
    Or support us by using our affiliate links on Amazon UK and Amazon US
    Alternatively, why not ask me on the ASK NASCompares forum, by clicking the button below. This is a community hub that serves as a place that I can answer your question, chew the fat, share new release information and even get corrections posted. I will always get around to answering ALL queries, but as a one-man operation, I cannot promise speed! So by sharing your query in the ASK NASCompares section below, you can get a better range of solutions and suggestions, alongside my own.


      This description contains links to Amazon. These links will take you to some of the products mentioned in today’s video. As an Amazon Associate, I earn from qualifying purchases

    ko-fi subscribe

    DISCUSS with others your opinion about this subject.
    ASK questions to NAS community
    SHARE more details what you have found on this subject
    CONTRIBUTE with your own article or review. Click HERE
    IMPROVE this niche ecosystem, let us know what to change/fix on this site
    EARN KO-FI Share your knowledge with others and get paid for it! Click HERE


    One thought on “WD Red 14TB NAS Drives – WD140EFFX and WD141KFGX

    1. Western Digital’s “WD Red & Red Pro NAS HDD” section at https://www.westerndigital.com/products/internal-drives/wd-red-hdd have 2 PDF’s linked as “WD Red Desktop/Mobile Series Data Sheet” and “WD Red Pro Series Data Sheet” that show both 14 TB HDD’s as having a 512 MB Cache.