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
£791 (£43.94/TB)
WD181KRYZ
WD Gold · 18TB · Enterprise
£923 (£51.30/TB)

Value at a glance

Price / TB
MG09ACA18TE $21.80
WD181KRYZ $34.45
Capacity
MG09ACA18TE 18 TB
WD181KRYZ 18 TB
Noise (idle)
MG09ACA18TE 20 dB
WD181KRYZ 20 dB

Price history

UK · cheapest per day

MG09ACA18TE £791 WD181KRYZ £923
zoomed · drag to zoom
£1,003 £620 £238 Sep 2024 Feb 2025 Jul 2025 Nov 2025 Apr 2026 Sep 2026
MG09ACA18TE WD181KRYZ
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 SATA
Failure rate (AFR) - -
Price / TB $21.80 $34.45
Buy
£791
View at Amazon →
£923
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

WD181KRYZ

No Backblaze failure data for this model.

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