Verdict

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

HDWG51J
Toshiba N300 · 18TB · NAS
No US price yet
MG09ACA18TE
Toshiba MG09 · 18TB · Enterprise
$659 ($36.61/TB)

Value at a glance

Capacity
HDWG51J 18 TB
MG09ACA18TE 18 TB
Noise (idle)
HDWG51J 20 dB
MG09ACA18TE 20 dB

Price history

US · cheapest per day

MG09ACA18TE $659
zoomed · drag to zoom
$850 $554 $259 Sep 2024 Feb 2025 Jul 2025 Nov 2025 Apr 2026 Sep 2026
HDWG51J MG09ACA18TE
Capacity 18 TB 18 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class NAS 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
Buy No US price yet
$659
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.

HDWG51J

No Backblaze failure data for this model.

3yr warranty · 180 TB/yr rated · 1,000,000h MTBF

MG09ACA18TE

No Backblaze failure data for this model.

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