Verdict

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

ST20000VE002
Seagate SkyHawk AI · 20TB · Surveillance
£519 (£25.97/TB)
WD201KFGX
WD Red Pro · 20TB · NAS-Pro
£880 (£44.00/TB)

Value at a glance

Price / TB
ST20000VE002 $28.73
WD201KFGX $40.53
Capacity
ST20000VE002 20 TB
WD201KFGX 20 TB

Price history · UK, cheapest per day

ST20000VE002 £519 WD201KFGX £880
zoomed · drag to zoom
£1,268 £778 £288 Apr 2025 Jul 2025 Oct 2025 Jan 2026 Apr 2026 Jul 2026
ST20000VE002 WD201KFGX
Capacity 20 TB 20 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class Surveillance NAS-Pro
Spindle speed 7200 RPM 7200 RPM
Cache 512 MB 512 MB
Noise (idle) - 20 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) - -
Price / TB $28.73 $40.53
Buy
£519
View at Amazon →
£880
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.

ST20000VE002

No Backblaze failure data for this model.

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

WD201KFGX

No Backblaze failure data for this model.

5yr warranty · 300 TB/yr rated · 1,000,000h MTBF