Verdict

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

MG09ACA18TE
Toshiba MG09 · 18TB · Enterprise
€1,038 (€57.65/TB)
ST18000NM000J
Seagate Exos X18 · 18TB · Enterprise
€580 (€32.22/TB)

Value at a glance

Price / TB
MG09ACA18TE $21.80
ST18000NM000J $33.61
Capacity
MG09ACA18TE 18 TB
ST18000NM000J 18 TB
Noise (idle)
MG09ACA18TE 20 dB
ST18000NM000J 29 dB

Price history · DE, cheapest per day

MG09ACA18TE €1,038 ST18000NM000J €580
zoomed · drag to zoom
€1,038 €627 €216 Jul 2024 Dec 2024 May 2025 Oct 2025 Feb 2026 Jul 2026
MG09ACA18TE ST18000NM000J
Capacity 18 TB 18 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class Enterprise Enterprise
Spindle speed 7200 RPM 7200 RPM
Cache 512 MB 256 MB
Noise (idle) 20 dB 29 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) - -
Price / TB $21.80 $33.61
Buy
€1,038
View at Amazon →
€580
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.

MG09ACA18TE

No Backblaze failure data for this model.

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

ST18000NM000J

No Backblaze failure data for this model.

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