Verdict

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

ST22000NT001
Seagate IronWolf Pro · 22TB · NAS-Pro
No UK price yet
WUH722222ALE6L4
WD Ultrastar DC HC570 · 22TB · Enterprise
No UK price yet

Value at a glance

Price / TB
ST22000NT001 $36.79
WUH722222ALE6L4 $37.73
Capacity
ST22000NT001 22 TB
WUH722222ALE6L4 22 TB
Noise (idle)
ST22000NT001 28 dB
WUH722222ALE6L4 20 dB

Price history

UK · cheapest per day

ST22000NT001 £387 WUH722222ALE6L4 £1,056
zoomed · drag to zoom
£1,056 £721 £387 Sep 2024 Feb 2025 Jun 2025 Nov 2025 Mar 2026 Aug 2026
ST22000NT001 WUH722222ALE6L4
Capacity 22 TB 22 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class NAS-Pro Enterprise
Spindle speed 7200 RPM 7200 RPM
Cache 512 MB 512 MB
Noise (idle) 28 dB 20 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) - 0.47%
Price / TB $36.79 $37.73
Buy No UK price yet No UK price yet

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.

ST22000NT001

No Backblaze failure data for this model.

5yr warranty · 300 TB/yr rated · 1,200,000h MTBF

WUH722222ALE6L4

0.47% AFR vs 1.41% fleet avg

95% CI 0.42-0.53%

45,556 drives · ~59,595 drive-years · 282 failures · Backblaze thru Q2 2026

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