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expiredkoyin posted Mar 07, 2022 05:17 AM
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expiredkoyin posted Mar 07, 2022 05:17 AM

4TB WD Red Plus NAS 5400 RPM CMR 3.5" Internal Hard Drive

+ Free Shipping

$75

$130

42% off
Amazon
57 Comments 57,610 Views
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Deal Details
Amazon has 4TB WD Red Plus NAS 5400 RPM CMR 3.5" Internal Hard Drive (WD40EFZX) on sale for $74.99. Shipping is free.

Thanks to community member koyin for finding this deal.

Specs:
  • Interface: SATA
  • Cache Size: 128 MB
  • Disk Speed (RPM): 5400rpm
  • Designed with CMR technology for small or medium-sized businesses in RAID-optimized NAS systems with up to 8 bays. Perfect for handling increased workloads, including expanded OS compatibility and ZFS.
  • Recording Technology: CMR

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Our research indicates that this offer is $10 lower (11% savings) than the next best available price from a reputable merchant with prices starting from $84.99
    • Please read the Forum Thread for more deal discussion.
  • About this product:
    • Rating of 4.6 from over 2,200 Amazon customer reviews.
  • About this store:

Original Post

Written by koyin
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has 4TB WD Red Plus NAS 5400 RPM CMR 3.5" Internal Hard Drive (WD40EFZX) on sale for $74.99. Shipping is free.

Thanks to community member koyin for finding this deal.

Specs:
  • Interface: SATA
  • Cache Size: 128 MB
  • Disk Speed (RPM): 5400rpm
  • Designed with CMR technology for small or medium-sized businesses in RAID-optimized NAS systems with up to 8 bays. Perfect for handling increased workloads, including expanded OS compatibility and ZFS.
  • Recording Technology: CMR

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
    • Our research indicates that this offer is $10 lower (11% savings) than the next best available price from a reputable merchant with prices starting from $84.99
    • Please read the Forum Thread for more deal discussion.
  • About this product:
    • Rating of 4.6 from over 2,200 Amazon customer reviews.
  • About this store:

Original Post

Written by koyin

Community Voting

Deal Score
+50
Good Deal
Visit Amazon

Price Intelligence

Model: Western Digital Red Plus WD40EFZX 4 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method - Storage System De

Deal History 

Sort: Most Recent
Post Date Sold By Sale Price Activity
03/06/23Walmart$70 popular
16
12/13/22Newegg$70
5
12/09/22Newegg$70
3
11/24/22Newegg$70
6
09/20/22Newegg$70
1
09/20/22Amazon$70
2
08/11/22Newegg$70 frontpage
29
08/09/22Newegg$80
2
07/25/22Newegg$69
5
07/10/22Western Digital$70 frontpage
35
05/24/22Newegg$70 popular
13
12/28/21Newegg$68 popular
50
12/24/21Newegg$68 frontpage
47
12/22/21Newegg$70
2
12/18/21Amazon$70 frontpage
55
12/17/21Newegg$70 frontpage
51
12/09/21Newegg$75
15
12/03/21Newegg$75 popular
25
11/25/21Amazon$210 frontpage
150
11/22/21Newegg$77 frontpage
57
Show More

Current Prices

Sort: Lowest to Highest | Last Updated 11/3/2025, 02:17 AM
Sold By Sale Price
Amazon$119.65

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Top Comments

ifoundu
1614 Posts
229 Reputation
Your calculation is right, but your interpretation is off. The result means how many gig can be bought per dollar, clearly your dollar buys more gig for 6TB one.

To calculate the cost per TB, use

$75/4 tb = $18.75/tb
$110/6 tb = $18.33/tb
rblancarte
345 Posts
51 Reputation
Except those are Red (SMR) not Red Plus (CMR).
ifoundu
1614 Posts
229 Reputation
6TB one for $110 is cheaper per TB wise.

56 Comments

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Mar 07, 2022 06:48 AM
1,614 Posts
Joined May 2006
ifounduMar 07, 2022 06:48 AM
1,614 Posts
6TB one for $110 is cheaper per TB wise.
Last edited by ifoundu March 7, 2022 at 09:08 AM.
Mar 07, 2022 04:38 PM
2,951 Posts
Joined Nov 2013

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Mar 07, 2022 04:42 PM
1,614 Posts
Joined May 2006
ifounduMar 07, 2022 04:42 PM
1,614 Posts
Quote from Bennysdeals1 :
8TB for $120 would be cheaper still if one knew where to buy it.
6TB one is on the same Amazon page, just choose 6TB option. Mind sharing where to buy 8TB for $120?
Mar 07, 2022 04:49 PM
308 Posts
Joined Aug 2014

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Mar 07, 2022 04:50 PM
345 Posts
Joined Nov 2006
rblancarteMar 07, 2022 04:50 PM
345 Posts
Quote from cobwash :
Western digital has 6tb 5400 drive for 105. https://www.westerndigital.com/pr...d#WD60EFAX [westerndigital.com]
Except those are Red (SMR) not Red Plus (CMR).
Mar 07, 2022 05:02 PM
9 Posts
Joined Nov 2013
RarianRMar 07, 2022 05:02 PM
9 Posts
SMR is fine for non-raid media storage. Especially something like unRAID.
Mar 07, 2022 05:02 PM
2,189 Posts
Joined Dec 2009
itsme13Mar 07, 2022 05:02 PM
2,189 Posts
Quote from cobwash :
Western digital has 6tb 5400 drive for 105. https://www.westerndigital.com/pr...d#WD60EFAX
SMR drive, same price on amazon

https://www.amazon.com/Red-6TB-In...127&sr=1-1

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Mar 07, 2022 05:03 PM
1,412 Posts
Joined Jul 2017
slicksdealMar 07, 2022 05:03 PM
1,412 Posts
Newegg frequently had these for $68. You could try Amazon warehouse for $65 (probably a bad idea if it was shipped multiple times and possibly used)
Mar 07, 2022 05:05 PM
2,189 Posts
Joined Dec 2009
itsme13Mar 07, 2022 05:05 PM
2,189 Posts
Quote from slicksdeal :
Newegg frequently had these for $68. You could try Amazon warehouse for $65 (probably a bad idea if it was shipped multiple times and possibly used)

its been a while these hit $68, the cheapest was during thanksgiving. they were $70
Mar 07, 2022 05:19 PM
30 Posts
Joined Oct 2005
So-Fa-KingMar 07, 2022 05:19 PM
30 Posts
As an FYI, Amazon has the 6TB WD Red Plus on sale for $110.
Mar 07, 2022 05:41 PM
345 Posts
Joined Nov 2006
rblancarteMar 07, 2022 05:41 PM
345 Posts
Decided to pull the trigger on this. My NAS drives are pushing 7 years old (CMR WD Reds).
Mar 07, 2022 06:00 PM
2,376 Posts
Joined Jul 2010
tshrimpMar 07, 2022 06:00 PM
2,376 Posts
Quote from itsme13 :
its been a while these hit $68, the cheapest was during thanksgiving. they were $70
And not sure we will see those prices again. With record inflation, what qualifies as a "deal" is a changing Frown.
Mar 07, 2022 06:29 PM
1,033 Posts
Joined Jul 2008
sahil80Mar 07, 2022 06:29 PM
1,033 Posts
purchased a used one 3 days ago for $60 and did a hddscan on it. Looks perfect!
Mar 07, 2022 06:50 PM
99 Posts
Joined Jan 2019
HopsizzleMar 07, 2022 06:50 PM
99 Posts
BB has it price matched so if you want local pick up that's also an option.

6tb was sold out for shipping and in my area though.

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Mar 07, 2022 06:51 PM
3,284 Posts
Joined Aug 2006

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