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WD NasWare Red WD40EFAX 4 TB
SMR

Photos - Hard Drive WD NasWare Red WD40EFAX 4 TB SMR
£151.01 
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Amazon.co.uk

WESTERN DIGITAL Red 4TB 6Gb/s SATA HDD Brand WD40EFAX

Amazon.co.uk
Delivery: to United Kingdom
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WD WD40EFAX
Red (NAS)5 year warrantySMR
1 TB2 TB3 TB
CMR
4 TB
CMR
4 TB
SMR
6 TB
CMR
Placement
built-in
Type
HDD
Features
server
Size
4000 GB
Form factor
3.5 "
Connection
SATA3
Manufacturer's warranty
5 years
Cache memory
256 MB
Record technology
SMR
RPM
5400 rpm
Data transfer rate
180 MB/s
Size
147x102x26 mm
Added to E-Catalog
march 2020

Reliable and capacious 3.5″ internal hard drive from the 2020 NasWare Red HDD family. This line includes models from 1 GB to 10 TB, which are optimized for long-term storage of information in NAS-arrays. It is positioned as a product of the middle price category, designed for use in home and office multi-disk storage connected to the local network using high-speed network cable or wireless connections.

In addition, it can be used as an additional high-capacity HDD in a universal home PC, gaming or multimedia system. The WD NasWare Red WD40EFAX hard drive is not recommended for use as a system hard drive, but it will perfectly cope with storing large volumes of work project files, the highest quality video / photo / audio content and backups. This model uses tiled magnetic recording (SMR) technology to achieve high capacity, and the magnetic platters themselves rotate at a speed of 5400 rpm. This provides moderate heat dissipation (3.3 watts at idle), which is important when building multi-drive home NAS systems with quiet cooling. 3D Active Balance Plus dual plane balancing technology guarantees high reliability and stable performance when working 24/7.

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog WD 2025 - new arrivals, bestsellers, and the most relevant models WD.
How to Choose a Hard DriveUnderstanding how to choose the right HDD for gaming, video recording, server, and other tasks
Series WD Red (NAS)Compare using chart →
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WD Red Pro WD181KFGX
from £389.08 
18000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD121KFBX
from £313.99 
12000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD4005FFBX
from £119.49 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD161KFGX
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WD Red Pro WD2002FFSX
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2000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
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4000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD103KFBX
from £264.99 
10000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD NasWare Red WD40EFRX
from £128.45 
4000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
WD Red Pro WD142KFGX
from £315.88 
14000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD6005FFBX
from £184.97 
6000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD102KFBX
from £314.59 
10000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD6003FFBX
from £187.99 
6000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD NasWare Red WD20EFRX
from £79.43 
2000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
WD NasWare Red WD10EFRX
from £65.40 
1000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
WD Red Pro WD201KFGX
from £457.10 
20000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD NasWare Red 2.5" WD7500BFCX
from £46.00 
750 GB, built-in, server, 2.5 ", buffer: 64 MB, 7200 rpm, connection: SATA3, warranty 3 years
WD Red Pro WD221KFGX
from £517.27 
22000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD NasWare Red WD60EFRX
from £273.98 
6000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
WD Red Pro WD6001FFWX
from £307.50 
6000 GB, built-in, server, 3.5 ", buffer: 128 MB, 7200 rpm, connection: SATA3, warranty 5 years

WD NasWare Red WD40EFAX configurations

Price for WD NasWare Red WD40EFAX
WD NasWare Red WD10EFRX 1 TBfrom £65.403 offers
WD NasWare Red WD20EFRX 2 TBfrom £79.433 offers
WD NasWare Red WD30EFRX 3 TB
CMR
from £99.995 offers
WD NasWare Red WD40EFRX 4 TB
CMR
from £128.454 offers
WD NasWare Red WD40EFAX 4 TB
SMR
from £151.011 offer
WD NasWare Red WD60EFRX 6 TB
CMR
from £273.982 offers
Video reviews
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WD NasWare Red WD40EFRX
from £128.45 
4000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
WD Red Plus WD40EFZX
from £126.79 
4000 GB, built-in, server, 3.5 ", buffer: 128 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
WD Purple WD40PURX
from £74.22 
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WD Gold Enterprise Class WD4004FRYZ
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Toshiba MG08 MG08ADA400E
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WD Red Pro WD4003FFBX
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Toshiba MG04ACAxxxxE MG04ACA400E
from £143.68 
4000 GB, built-in, server, 3.5 ", buffer: 128 MB, 7200 rpm, connection: SATA3, warranty 5 years
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from £130.20 
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Filters
Models
WD NasWare Red often compared
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[WD40EFAX]
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[WD4003FFBX]
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[WDBPKJ0040BBK]
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