Verdict

These are closely matched NAS drives of the same capacity - decide on price and warranty. Check the live $/TB above.

HAT3300-4T
Synology Plus Series · 4TB · NAS
£249 (£62.25/TB)
WD4004FRYZ
WD Gold · 4TB · Enterprise
£355 (£88.72/TB)

Value at a glance

Price / TB
HAT3300-4T $75.60
WD4004FRYZ $35.07
Capacity
HAT3300-4T 4 TB
WD4004FRYZ 4 TB
Noise (idle)
HAT3300-4T 23 dB
WD4004FRYZ 20 dB

Price history · UK, cheapest per day

HAT3300-4T £249 WD4004FRYZ £355
zoomed · drag to zoom
£355 £246 £137 Aug 2024 Dec 2024 May 2025 Oct 2025 Mar 2026 Aug 2026
HAT3300-4T WD4004FRYZ
Capacity 4 TB 4 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class NAS Enterprise
Spindle speed 5400 RPM 7200 RPM
Cache 256 MB 256 MB
Noise (idle) 23 dB 20 dB
Fill Air Air
Interface SATA SATA
Failure rate (AFR) - -
Price / TB $75.60 $35.07
Buy
£249
View at Amazon →
£355
View at Amazon →

Highlighted cells mark the stronger spec for a NAS build. Failure rates from Backblaze Drive Stats where available; $/TB uses the cheapest live price. Buy links are Amazon affiliate.

HAT3300-4T

No Backblaze failure data for this model.

3yr warranty · 180 TB/yr rated · 1,200,000h MTBF

WD4004FRYZ

No Backblaze failure data for this model.

5yr warranty · 550 TB/yr rated · 2,500,000h MTBF