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WD
Red
4TB
WD40EFRX
3.5" SATA 6Gb/s




WD WD

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£112.80

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Stock codeISwcr4000
Quick code41629

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4TB Data
5400 RPM
3.5"
64MB RAM
3yr Warranty
Description
WD RED NAS HARD DRIVE

MVP OF NAS
There’s a WD Red drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 10TB, WD Red offers a wide array of solutions for customers looking to build a high 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.

The drive for NAS
Desktop drives aren’t typically tested or designed for the rigors of a NAS system. Do right by your NAS and choose the drive with an array of features to help preserve your data and maintain optimum performance.

Built for NAS Compatibility
WD Red drives with NASware 3.0 technology are purpose-built to balance performance and reliability in NAS and RAID environments.

Keep it Cool
The always-on environment of a NAS or RAID is a hot one. WD Red drives are engineered to run cool and quiet while offering optimum compatibility for demanding 24x7 environments.

WD RED FOR HOME
Stream, backup, organize and effortlessly share your digital content to your TV, PC and more. NASware technology increases your drives' compatibility with your NAS system, for better playback with your devices.

WD RED FOR SMALL BUSINESS
Businesses thrive on productivity and efficiency, two guiding principles built into the design of the WD Red drive. Share and backup files at the speed of your business with a WD Red drive in your NAS.

WD RED FOR BIG BUSINESS
Looking for maximum performance in a heavy use NAS? The WD Red Pro drive is designed to handle an increase in workload and system demand and features a 5-year limited warranty.

DESIGNED FOR NAS
Desktop drives aren't purpose-built for NAS. But WD Red drives with NASware 3.0 are. Our exclusive technology takes the guesswork out of selecting a drive. We can help you find the perfect storage for your NAS system.
Specifications
Specifications

General

Stock code ISwcr4000
Brand WD
Series Red
Model WD40EFRX
Type 3.5" SATA 6Gb/s
UPC 718037810058
ROHS Y
Date added 03/09/2013

WD40EFRX Spec Information

Capacity 4TB
Form Factor / Drive Height 26mm
RPM 5400rpm
Platter size 3.5"
RAM/Cache 64MB
Guarantee 3yr

Software

WD40EFRX Speed

Read speed (Max) 150

Physical

Weight (kg) 0.68kg
Watts 4.5W
Watts (Idle) 3.3W
Watts (Sleep) 0.4W
Watts (Startup) 21.00W
Bels (Idle) 2.5
Bels (Seek) 2.8
Shock (Operating) R-30g/2ms, RW-65g/2ms
Shock (Non-Operating) 250g/1ms
Links
Images
Video
Alternatives
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WD Red WD40EFRX 3.5" SATA 6Gb/s 4TB 5400rpm
WD Red WD40EFRX 3.5" SATA 6Gb/s 4TB 5400rpm
4TB

Stock codeISwcr4000
Quick code41629



WD
Red
4TB
WD40EFRX
3.5" SATA 6Gb/s



WD40EFRX review star 1WD40EFRX review star 2WD40EFRX review star 3WD40EFRX review star 4WD40EFRX review star 5 5* from 12 Reviews

1TB 2TB 3TB 4TB 6TB 8TB 10TB 12TB


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wd red nas hdd




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Description

WD Red WD40EFRX 3.5" SATA 6Gb/s 4TB 5400rpm


WD WD40EFRX logo

SPAN TV



WD WD40EFRX Key features


4TB Data
5400 RPM
3.5"
64MB RAM
3yr Warranty


WD RED NAS HARD DRIVE

MVP OF NAS
There’s a WD Red drive for every compatible NAS system to help fulfill your data storage needs. With drives up to 10TB, WD Red offers a wide array of solutions for customers looking to build a high 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.

The drive for NAS
Desktop drives aren’t typically tested or designed for the rigors of a NAS system. Do right by your NAS and choose the drive with an array of features to help preserve your data and maintain optimum performance.

Built for NAS Compatibility
WD Red drives with NASware 3.0 technology are purpose-built to balance performance and reliability in NAS and RAID environments.

Keep it Cool
The always-on environment of a NAS or RAID is a hot one. WD Red drives are engineered to run cool and quiet while offering optimum compatibility for demanding 24x7 environments.

WD RED FOR HOME
Stream, backup, organize and effortlessly share your digital content to your TV, PC and more. NASware technology increases your drives' compatibility with your NAS system, for better playback with your devices.

WD RED FOR SMALL BUSINESS
Businesses thrive on productivity and efficiency, two guiding principles built into the design of the WD Red drive. Share and backup files at the speed of your business with a WD Red drive in your NAS.

WD RED FOR BIG BUSINESS
Looking for maximum performance in a heavy use NAS? The WD Red Pro drive is designed to handle an increase in workload and system demand and features a 5-year limited warranty.

DESIGNED FOR NAS
Desktop drives aren't purpose-built for NAS. But WD Red drives with NASware 3.0 are. Our exclusive technology takes the guesswork out of selecting a drive. We can help you find the perfect storage for your NAS system.



Specifications

General

Stock code ISwcr4000
Brand WD
Series Red
Model WD40EFRX
Type 3.5" SATA 6Gb/s
UPC 718037810058
ROHS Y
Date added 03/09/2013

WD40EFRX Spec Information

Capacity 4TB
Form Factor / Drive Height 26mm
RPM 5400rpm
Platter size 3.5"
RAM/Cache 64MB
Guarantee 3yr

Software

WD40EFRX Speed

Read speed (Max) 150

Physical

Weight (kg) 0.68kg
Watts 4.5W
Watts (Idle) 3.3W
Watts (Sleep) 0.4W
Watts (Startup) 21.00W
Bels (Idle) 2.5
Bels (Seek) 2.8
Shock (Operating) R-30g/2ms, RW-65g/2ms
Shock (Non-Operating) 250g/1ms
Alternatives
WD Purple WD40PURZ 3.5" SATA 6Gb/s 4TB 5400rpm
WD Purple WD40PURZ 3.5" SATA 6Gb/s 4TB 5400rpm
ex.VAT £95.00
inc.VAT £114.00

2 days Leadtime

WD Desktop Blue WD40EZRZ 3.5" SATA 6Gb/s 4TB 5400rpm
WD Desktop Blue WD40EZRZ 3.5" SATA 6Gb/s 4TB 5400rpm
ex.VAT £87.00
inc.VAT £104.40

2 days Leadtime

WD AV WD40EURX 3.5" SATA 6Gb/s 4TB 5400-7200
WD AV WD40EURX 3.5" SATA 6Gb/s 4TB 5400-7200
ex.VAT £116.00
inc.VAT £139.20

2 days Leadtime

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WD Red WD40EFRX reviews


16/04/2018 | | EU Flag |
Competitively prices drives.
23/10/2017 | Cameron | FR Flag |
Very pleased with these WD Red 4TBs. Have two set up in our home office using the QNAP 253As. Saved a bit of time and worry having span set it up and test it first. Nice to have a company with a bespoke service to set up whatever you fancy. Other places only seemed to have very set options
07/11/2016 | Guest | AU Flag |
Is there a surcharge for credit card payment?
We do not charge for using a credit card, if you wish to use AMEX please use the PayPal portal


SPAN.COM tech team
22/07/2016 | | SE Flag |
Customer has rated the product, but left no comment
28/05/2016 | | GB Flag |
I've been a user of WD drives for 10+ years and these WD Reds are gonna keep me buying for another 10+ ..
19/03/2016 | | GB Flag |
Great drive but like all hard drives it should be 4tb once the op system is loaded on it not 3.65
the answer is mathematical !

A 4TB drive is 4,000,000,000,000 Bytes.
A Kilobyte is 1024 Bytes, not 1000 Bytes.
The same goes for KB-MB, MB-GB, and GB-TB.
So dividing 4,000,000,000,000 by 1024 then 1024 then 1024 then 1024 you will get... 3.65TB

If you look at the raw info for your drive, you will see that.

SPAN.COM tech team
01/03/2016 | | GB Flag |
Customer has rated the product, but left no comment
20/01/2016 | | GB Flag |
Customer has rated the product, but left no comment
12/01/2016 | | GB Flag |
Customer has rated the product, but left no comment
05/12/2015 | | GB Flag |
Customer has rated the product, but left no comment
23/11/2015 | | GB Flag |
What makes a NAS drive different from a standard consumer drive?
NAS Hard drives are designed to be more read and write active in the areas that you find in a NAS storage enviroment. Also, they use less power hour for hour and are designed to be left on for 24hours a day, 7 days a week.

SPAN.COM tech team
25/04/2015 | | GB Flag |
Grand service as ever. It's a real pleasure to be able to talk to a human rather than a CRM bot. I'll certainly choose Span over the deadnoghts of amazon!
17/10/2014 | | GB Flag |
arrived on time and now working just fine
27/06/2014 | | GB Flag |
Span - fast, efficient and delivers when they say they will.


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DISCLAIMER: Product information and images on this page are for guidance only and are liable to change without notice. Some details may refer to the whole category or range, rather than this particular item. Specifications shown are our best interpretation of information supplied by the manufacturer, and are as up-to-date as possible. If you require clarification on any item, please contact us and we will be glad to help you.
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