Verdict

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

MG09SCA18TE
Toshiba MG09 · 18TB · Enterprise
$700 ($38.89/TB)
WD181KFGX
WD Red Pro · 18TB · NAS-Pro
$795 ($44.17/TB)

Value at a glance

Price / TB
MG09SCA18TE $36.75
WD181KFGX $43.80
Capacity
MG09SCA18TE 18 TB
WD181KFGX 18 TB
Noise (idle)
MG09SCA18TE 20 dB
WD181KFGX 20 dB

Price history · US, cheapest per day

MG09SCA18TE $700 WD181KFGX $795
zoomed · drag to zoom
$845 $567 $290 Jul 2024 Dec 2024 May 2025 Oct 2025 Mar 2026 Jul 2026
MG09SCA18TE WD181KFGX
Capacity 18 TB 18 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class Enterprise NAS-Pro
Spindle speed 7200 RPM 7200 RPM
Cache 512 MB 512 MB
Noise (idle) 20 dB 20 dB
Fill Helium Helium
Interface SAS SATA
Failure rate (AFR) - -
Price / TB $36.75 $43.80
Buy
$700
View at Amazon →
$795
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.

MG09SCA18TE

No Backblaze failure data for this model.

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

WD181KFGX

No Backblaze failure data for this model.

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