One of the strengths of the Western Digital Purple is its large capacity of 6 TB, but the low volume and good transfer rates also stood out positively here. However, the access times are somewhat long and the application performance is not particularly convincing.
WD Purple
4 TB, 3.5"More than 10 pieces in stock at third-party supplier
Product details
Designed for continuous operation in HD security systems. With a workload of up to 180 TB/year and support for up to 64 cameras, WD Purple hard drives are optimized for surveillance systems.
Interface version | SATA III |
Storage Technology | CMR |
Interface | SATA |
Scope of application | Surveillance |
Cache | 256 MB |
Sustained Speed HDD | 175 MB/s |
Max. Speed | 5400 RPM |
Item number | 17480825 |
Manufacturer | WD |
Category | Hard drives |
Manufacturer no. | WD42PURZ |
Release date | 27.10.2021 |
Scope of application | Surveillance |
Interface | SATA |
Interface version | SATA III |
Form factor | 3.5" |
Storage capacity | 4 TB |
Cache | 256 MB |
Sustained Speed HDD | 175 MB/s |
Max. Speed | 5400 RPM |
Storage Technology | CMR |
Max. Workload Rate | 180 TB/J |
Maximum operating temperature | 65 °C |
Max. noise level | 27 dB |
Power consumption (standby) | 0.30 W |
Power consumption | 4.60 W |
Country of origin | China |
Manufacturer commitment | SBTi |
CO₂-Emission | |
Climate contribution |
Scope of delivery | 1 x Western Digital Purple WD42PURZ |
Length | 14.70 cm |
Width | 10.16 cm |
Height | 2.61 cm |
Weight | 570 g |
Length | 20 cm |
Width | 13 cm |
Height | 6 cm |
Weight | 632 g |
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Reviews & Ratings
Warranty score
How often does a product of this brand in the «Hard drives» category have a defect within the first 24 months?
Source: Digitec Galaxus- 3.HPE0.9 %
- 4.Dell1.1 %
- 5.Toshiba1.6 %
- 5.WD1.6 %
- 7.Seagate1.9 %
Warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Digitec Galaxus- 1.HPE0 days
- 2.Seagate3 days
- 2.Synology3 days
- 2.Toshiba3 days
- 2.WD3 days
Return rate
How often is a product of this brand in the «Hard drives» category returned?
Source: Digitec Galaxus- 1.Ubiquiti1.1 %
- 2.Synology1.5 %
- 3.WD2.4 %
- 4.Toshiba2.5 %
- 5.Seagate3.3 %

- low operating temperature
- low power consumption
- three years warranty
- low operating noise
- High random access time and low all-round performance (both irrelavant for the field of application)
Western Digital's Purple series are very individually tailored drives for AV/surveillance use, which are only very conditionally suitable as a replacement for desktop HDDs in normal PCs or HTPCs/recorders. The WD60PURX is particularly good when the focus is on power consumption, thermal emissions and operating noise...