Verdict

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

ST18000NT001
Seagate IronWolf Pro · 18TB · NAS-Pro
€958 (€53.20/TB)
WD181KRYZ
WD Gold · 18TB · Enterprise
€788 (€43.77/TB)

Value at a glance

Price / TB
ST18000NT001 $42.00
WD181KRYZ $32.53
Capacity
ST18000NT001 18 TB
WD181KRYZ 18 TB
Noise (idle)
ST18000NT001 28 dB
WD181KRYZ 20 dB

Price history · FR, cheapest per day

ST18000NT001 €958 WD181KRYZ €788
zoomed · drag to zoom
€992 €646 €300 Jul 2024 Dec 2024 May 2025 Oct 2025 Feb 2026 Jul 2026
ST18000NT001 WD181KRYZ
Capacity 18 TB 18 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class NAS-Pro Enterprise
Spindle speed 7200 RPM 7200 RPM
Cache 256 MB 512 MB
Noise (idle) 28 dB 20 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) - -
Price / TB $42.00 $32.53
Buy
€958
View at Amazon →
€788
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.

ST18000NT001

No Backblaze failure data for this model.

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

WD181KRYZ

No Backblaze failure data for this model.

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