Western Digital WD
Red Plus (CMR)
4TB
WD40EFRX
3.5" SATA 6Gb/s
$119.99
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| Stock code | ISwcr4000 |
| Quick code | 41629 |
4TB Data
5400 RPM
3.5"
64MB RAM
3yr Warranty
Western Digital WD
Red Plus (CMR)
4TB
WD40EFRX
3.5" SATA 6Gb/s
5* from 12 Reviews | Questions 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. The WD Red drive features a 3-year limited warranty.
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. The WD Red drive features a 3-year limited warranty.
WD RED PRO 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.
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. The WD Red drive features a 3-year limited warranty.
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. The WD Red drive features a 3-year limited warranty.
WD RED PRO 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 | Western Digital WD |
| Series | Red Plus (CMR) |
| 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 |
| Reliability | 1M hours MTBF |
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
Reviews
Reviews & QuestionsPlease share your opinion or ask a question, about THIS product...
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Western Digital WD Red Plus (CMR) WD40EFRX reviews
16/04/2018 | Andrew Trent | 
|
Competitively prices drives. | 23/10/2017 | Cameron | 
|
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 | 
|
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
SPAN.COM tech team
22/07/2016 | Henrik | 
|
Customer has rated the product, but left no comment | 28/05/2016 | Colin | 
|
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 | Paul | |
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
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 | Matthew | |
Customer has rated the product, but left no comment | 20/01/2016 | Max | |
Customer has rated the product, but left no comment | 12/01/2016 | Michael | |
Customer has rated the product, but left no comment | 05/12/2015 | Darren | |
Customer has rated the product, but left no comment | 23/11/2015 | DarkHalmut | |
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
SPAN.COM tech team
25/04/2015 | Jeremy | |
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 | John | |
arrived on time and now working just fine | 27/06/2014 | Gary | |
Span - fast, efficient and delivers when they say they will.
| Would you like to tell us about a lower price for WD40EFRX?
Link to a WD40EFRX review page
Images
Video
Alternatives
|
Western Digital WD Red (SMR non-NAS) WD40EFAX 3.5" SATA 6Gb/s 4TB 5400rpm |  |
+ £1.90 ex.VAT £94.00 £112.80 |
|
Western Digital WD HGST Ultrastar DC HA210 7K2 HUS722T2TALA604 1W10002 3.5" SATA 6Gb/s 2TB 7200rpm |  |
+ £7.90 ex.VAT £100.00 £120.00 |
Why People Choose Us?
14 Day Return Guarantee
If you change your mind, you can return all or part of your order.
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Order before 4pm*, and in-stock products will be with you the next day. (Or Saturday. Or even Same Day).
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