Verdict

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

MG10ACA20TE
Toshiba MG10 · 20TB · Enterprise
£937 (£46.85/TB)
ST20000NT001
Seagate IronWolf Pro · 20TB · NAS-Pro
£790 (£39.50/TB)

Value at a glance

Price / TB
MG10ACA20TE $46.76
ST20000NT001 $43.15
Capacity
MG10ACA20TE 20 TB
ST20000NT001 20 TB
Noise (idle)
MG10ACA20TE 20 dB
ST20000NT001 28 dB

Price history

UK · cheapest per day

MG10ACA20TE £937 ST20000NT001 £790
zoomed · drag to zoom
£1,387 £841 £295 Oct 2024 Mar 2025 Aug 2025 Jan 2026 May 2026 Oct 2026
MG10ACA20TE ST20000NT001
Capacity 20 TB 20 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class Enterprise NAS-Pro
Spindle speed 7200 RPM 7200 RPM
Cache 512 MB 256 MB
Noise (idle) 20 dB 28 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) 0.79% -
Price / TB $46.76 $43.15
Buy
£937
View at Amazon →
£790
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.

MG10ACA20TE

0.79% AFR vs 1.41% fleet avg

95% CI 0.69-0.91%

25,270 drives · ~25,546 drive-years · 202 failures · Backblaze lifetime Q2 2026

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

ST20000NT001

No Backblaze failure data for this model.

5yr warranty · 300 TB/yr rated · 1,200,000h MTBF