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
€963 (€53.52/TB)
WUH721818AL5204
WD Ultrastar DC HC550 · 18TB · Enterprise
No FR price yet

Value at a glance

Capacity
MG09ACA18TE 18 TB
WUH721818AL5204 18 TB
Noise (idle)
MG09ACA18TE 20 dB
WUH721818AL5204 20 dB

Price history

FR · cheapest per day

MG09ACA18TE €963
zoomed · drag to zoom
€1,072 €680 €289 Nov 2024 Mar 2025 Aug 2025 Jan 2026 Jun 2026 Nov 2026
MG09ACA18TE WUH721818AL5204
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 512 MB
Noise (idle) 20 dB 20 dB
Fill Helium Helium
Interface SATA SAS
Failure rate (AFR) - -
Price / TB $35.70 -
Buy
€963
View at Amazon →
No FR 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.

MG09ACA18TE

No Backblaze failure data for this model.

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

WUH721818AL5204

No Backblaze failure data for this model.

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