Verdict

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

ST22000NM001E
Seagate Exos X22 · 22TB · Enterprise
€660 (€30.00/TB)
WD221KFGX
WD Red Pro · 22TB · NAS-Pro
€998 (€45.35/TB)

Value at a glance

Price / TB
ST22000NM001E $32.40
WD221KFGX $38.49
Capacity
ST22000NM001E 22 TB
WD221KFGX 22 TB
Noise (idle)
ST22000NM001E 29 dB
WD221KFGX 20 dB

Price history · FR, cheapest per day

ST22000NM001E €660 WD221KFGX €998
zoomed · drag to zoom
€1,187 €753 €320 Jul 2024 Dec 2024 May 2025 Oct 2025 Feb 2026 Jul 2026
ST22000NM001E WD221KFGX
Capacity 22 TB 22 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class Enterprise NAS-Pro
Spindle speed 7200 RPM 7200 RPM
Cache 512 MB 512 MB
Noise (idle) 29 dB 20 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) - -
Price / TB $32.40 $38.49
Buy
€660
View at Amazon →
€998
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.

ST22000NM001E

No Backblaze failure data for this model.

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

WD221KFGX

No Backblaze failure data for this model.

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