WD Red 4TB NAS

$129.99

(8 customer reviews)
Last updated on January 18, 2025 7:37 am
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Highest Price
$198.95 eBay
July 30, 2024
Lowest Price
$99.99 Target.com
August 1, 2024
Current Price
$129.99 Newegg.com
January 18, 2025
Since July 30, 2024
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Set Alert for Product: WD Red 4TB NAS Internal Hard Drive - 5400 RPM Class, SATA 6Gb/s, SMR, 256MB Cache, 3.5" - WD40EFAX - $129.99

Specification: WD Red 4TB NAS

Product
Brand

Model

WD40EFAX

Series

Red

Specification
Best Seller Ranking

#8 in Desktop Internal Hard Drives

Cache

256MB

Length maximum

147.00mm

Width maximum

101.60mm

Height maximum

26.10mm

Form Factor

3.5"

Usage

For NAS systems

Features

Specifically designed for use in NAS systems with up to 8 baysSupports up to 180 TB/yr workload rateNASware technology for compatibilitySmall and home office NAS systems in a 24×7 environment

RPM

5400 RPM

Recording Technology

SMR

Capacity

4TB

Interface

SATA 6.0Gb/s

Packaging

Bare Drive

Date First Available

March 02, 2020

Item Type

Internal

Photos: WD Red 4TB NAS

8 reviews for WD Red 4TB NAS

1.4 out of 5
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  1. Anonymous

    Pros: Can be had for pretty cheap on sale. Cons: This newer 6tb model was refreshed as a SMR drive. Overall Review: First one I got was defective. Bad sectors. Western digital lifeguard failed almost within minutes of running a extended scan on it. Returned for another one. Second one had no bad sectors but experienced performance issues which is when I discovered that this is a SMR drive. While being good at write to it once archive type drive. It’s comes up short if you do a lot of re…

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  2. Anonymous

    Cons: DMSMR drives offer terrible performance Overall Review: Bought these thinking they were a good deal. They were not. They were significantly shower than CMR devices and I’m preparing to return them

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  3. Nicholas G.

    Pros: The drives will probably work fine as desktop or archive drives. Price is reasonable. Cons: Western Digital is marketing these drives as compatible with NAS systems and RAID configurations. But as multiple media outlets have been reporting, the EFAX drive models use SMR drive technology. This type of drive is known to have performance and compatibility issues with RAID and NAS configurations, including randomly dropped drives and issues resyncing. Western Digital as know “fessed up”…

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  4. michael m.

    Cons: SMR Overall Review: Found out that this model uses SMR, not CMR, as its recording methodology after I purchased it, even thought it is labeled as a NAS drive. Not nice Western Digital. you just lost my future business

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  5. James H.

    Pros: N/a Cons: SMR; not suitable for NAS; shady behavior on part of manufacturer Overall Review: I bought a 6TB EFRX drive years ago and loved it. Bought this last year to match the other drive in my RAID and immediately noticed how slow it was in mirroring the data on my existing drive. Now I find out about how WD quietly switched a lot of drives in this line to shingled recording and are telling people they should’ve instead spent more on the pro line. Congratulations, WD, you’ve diluted…

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  6. Chad R.

    Pros: I’m sure in some applications it is a cost effective way to store data. Cons: This drive uses SMR technology that wasn’t mentioned when I bought it, but the news came out a couple of days after I received it. Luckily Newegg took it back for just the cost of shipping. Disappointed that WD would use SMR technology on this type of drive considering all of the negative issues associated with SMR and NAS. Overall Review: To be fair, I never installed the drives. After reading the stories on…

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  7. Chris M.

    Pros: There are absolutely NO pros about this product. Cons: Refer to class action lawsuit in regards to this line of drives, using SMR technology, which is unacceptable for use in NAS applications, which the drive is specifically marketed for. Prepare for extremely long read/write times. It would be faster to ZIP your files onto floppy disks. Overall Review: DO NOT BUY THIS DRIVE.

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  8. Curtis S.

    Cons: – When I purchased this drive, it was not labeled as an SMR drive. I replaced some conventional drives with two of these drives about 6 months ago. It took a LONG time to rebuild the array, which seemed normal enough and I was glad to have the extra space. However, it has been an incredibly slow drive ever since as I have a lot of large files that take forever to sync between by two NAS’s. – Because of the slow speed of the shingled magnetic recording, the syncing seems to timeout,…

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