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
£595 (£33.06/TB)
MG09SCA18TE
Toshiba MG09 · 18TB · Enterprise
£806 (£44.75/TB)

Value at a glance

Price / TB
MG09ACA18TE $21.80
MG09SCA18TE $36.75
Capacity
MG09ACA18TE 18 TB
MG09SCA18TE 18 TB
Noise (idle)
MG09ACA18TE 20 dB
MG09SCA18TE 20 dB

Price history · UK, cheapest per day

MG09ACA18TE £595 MG09SCA18TE £806
zoomed · drag to zoom
£806 £522 £238 Jul 2024 Dec 2024 May 2025 Oct 2025 Feb 2026 Jul 2026
MG09ACA18TE MG09SCA18TE
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 $21.80 $36.75
Buy
£595
View at Amazon →
£806
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

MG09SCA18TE

No Backblaze failure data for this model.

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