Western Digital WD Red Plus 4TB 3.5′ NAS HDD SATA III NAS Hard Drive 5400 RPM 128MB Cache 180MB/S 180TB/Year 3Y warranty (WD40EFZZ) | WD40EFZZ

Western Digital WD Red Plus 4TB 3.5′ NAS HDD SATA III NAS Hard Drive 5400 RPM 128MB Cache 180MB/S 180TB/Year 3Y warranty (WD40EFZZ)

· Supports NAS systems with up to 8 bays
· Supports up to 180TB/year workload rate
· NASware firmware for compatibility
· Built for small or medium business NAS systems in a 24/7 environment
· Thrives in 24/7 Environments

Specifications

Capacity
4TB

Form Factor
3.5-Inch

Connector
SATA

Interface
SATA

Transfer Rate
up to 180MB/s

Disk Speed (RPM)
5400 RPM

Recording Technology
CMR

Cache Size
128MB

Warranty
3-Year Limited Warranty

Endurance (TBW)
180TB/Year

Dimensions (L x W x H)
146.99mm x 101.6mm x 26.11mm

Weight
0.55kgs

Model Number
WD40EFZZ

Operating Temperature
0°C to 65°C

Non-Operating Temperature
-40°C to 70°C

Certifications
BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB-Scheme, TUV, UL

Product Last Updated: 24/09/2026

* Whilst we endevour to have the correct information on our products provided from the supplier/manufacturer errors do occur. If you would like to double check the information, please feel free to contact us and we will be more than happy to confirm information on the item prior to purchase. In the event that product information is incorrect due to information we received from our supplier or manufacturer, we do not take responsibility or be held liable for damage(s) or loss(s). We will work with you and do our best to make the best of a bad situation and work with our supplier(s) and/or manufacturer(s) to supply the correct information for the item purchased etc..