only hard drivesin all categories
only hard drives
United Kingdom

WD NasWare Red WD40EFAX 4 TB
SMR

Photos - Hard Drive WD NasWare Red WD40EFAX 4 TB SMR
£195.00 
Buy!
Amazon.co.uk

WD Western Digital Red WD40EFAX Internal Hard Drive 89 cm 35 Inch SATA 6 Gb/s

Amazon.co.uk
Delivery: to United Kingdom
Report
add to listmy lists
WD WD40EFAX
Red (NAS)5 year warrantySMR
1 TB2 TB3 TB
CMR
4 TB
CMR
4 TB
SMR
10 TB
WD100EFAX
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 →
WD Red Pro WD2002FFSX
from £95.66 
2000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD8003FFBX
from £201.49 
8000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD NasWare Red WD40EFRX
from £126.00 
4000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
WD Red Pro WD201KFGX
from £478.33 
20000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD4005FFBX
from £99.99 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD103KFBX
from £254.99 
10000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD NasWare Red WD40EFAX
from £195.00 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, write SMR, 5400 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD121KFBX
from £301.99 
12000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD4003FFBX
from £130.92 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD122KFBX
from £297.14 
12000 GB, built-in, server, 3.5 ", buffer: 512 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 Red Pro WD102KFBX
from £307.99 
10000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD181KFGX
from £398.94 
18000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD221KFGX
from £492.49 
22000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD240KFGX
from £548.30 
24000 GB, built-in, server, helium, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD161KFGX
from £325.98 
16000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD NasWare Red WD10EFRX
from £70.31 
1000 GB, built-in, server, 3.5 ", buffer: 64 MB, write CMR, 5400 rpm, connection: SATA3, warranty 3 years
WD Red Pro WD142KFGX
from £280.93 
14000 GB, built-in, server, 3.5 ", buffer: 512 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD6005FFBX
from £179.99 
6000 GB, built-in, server, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Red Pro WD6002FFWX
from £245.78 
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 £70.314 offers
WD NasWare Red WD20EFRX 2 TBfrom £67.705 offers
WD NasWare Red WD30EFRX 3 TB
CMR
from £89.992 offers
WD NasWare Red WD40EFRX 4 TB
CMR
from £126.003 offers
WD NasWare Red WD40EFAX 4 TB
SMR
from £195.001 offer
WD NasWare Red WD100EFAX 10 TB
WD100EFAX
from £366.991 offer
Video reviews
We recommendCompare using chart →
Synology HAT5300 HAT5300-4T
from £182.20 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Ultrastar DC HC310 HUS726T4TALE6L4
from £142.71 
4000 GB, built-in, server, 3.5 ", buffer: 256 MB, 7200 rpm, connection: SATA3
Dell SATA ATK 400-ATKN
from £168.41 
4000 GB, built-in, server, 3.5 ", 7200 rpm, connection: SATA3
Hitachi HGST Ultrastar 7K6000 HUS726040ALE614
from £188.00 
4000 GB, built-in, server, 3.5 ", buffer: 128 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Gold WD4002FYYZ
from £173.77 
4000 GB, built-in, server, 3.5 ", buffer: 128 MB, 7200 rpm, connection: SATA3, warranty 5 years
WD Black 3.5" Gaming Hard Drive WD4006FZBX
from £192.99 
4000 GB, built-in, pC, 3.5 ", buffer: 256 MB, write CMR, 7200 rpm, connection: SATA3, warranty 5 years
WD Blue
from £24.99 
built-in, 500 - 8000 GB, 3.5 ", 5400 rpm - 7200 rpm
Transcend StoreJet 25M3
from £53.02 
external, 640 - 4000 GB, 2.5 ", 5400 rpm
Seagate SkyHawk
from £51.58 
built-in, 1000 - 8000 GB, 3.5 ", 5400 rpm - 7200 rpm
Seagate BarraCuda Compute
from £39.99 
built-in, 1000 - 8000 GB, 3.5 ", 5400 rpm - 7200 rpm
WD Elements Portable 3.0 2.5"
from £42.99 
external, 500 - 5000 GB, 2.5 ", 5400 rpm
WD My Book NEW
from £109.02 
external, 3000 - 22000 GB, 3.5 "
Filters
Models
WD NasWare Red often compared
WD Blue
WD NasWare Red
[WD40EFAX]
vs
WD Blue
[WD40EZAZ]
WD Purple Surveillance
WD NasWare Red
[WD40EFAX]
vs
WD Purple Surveillance
[WD42PURZ]
WD Red Plus
WD NasWare Red
[WD40EFAX]
vs
WD Red Plus
[WD40EFPX]
WD Red Pro
WD NasWare Red
[WD40EFAX]
vs
WD Red Pro
[WD4003FFBX]
WD Passport Portable
WD NasWare Red
[WD40EFAX]
vs
WD Passport Portable
[WDBPKJ0040BBK]
WD Black 3.5
WD NasWare Red
[WD40EFAX]
vs
WD Black 3.5" Gaming Hard Drive
[WD4005FZBX]
Toshiba MG04ACAxxxxE
WD NasWare Red
[WD40EFAX]
vs
Toshiba MG04ACAxxxxE
[MG04ACA400E]
WD Purple
WD NasWare Red
[WD40EFAX]
vs
WD Purple
[WD140PURZ]