Verdict

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

HAT3320-20T
Synology Plus Series · 20TB · NAS
No CA price yet
ST20000NT001
Seagate IronWolf Pro · 20TB · NAS-Pro
C$995 (C$49.75/TB)

Value at a glance

Capacity
HAT3320-20T 20 TB
ST20000NT001 20 TB
Noise (idle)
HAT3320-20T 20 dB
ST20000NT001 28 dB

Price history · CA, cheapest per day

ST20000NT001 C$995
zoomed · drag to zoom
C$995 C$722 C$450 Aug 2024 Dec 2024 May 2025 Oct 2025 Mar 2026 Aug 2026
HAT3320-20T ST20000NT001
Capacity 20 TB 20 TB
Recording tech CMR CMR
RAID / NAS safe Yes Yes
Class NAS NAS-Pro
Spindle speed 7200 RPM 7200 RPM
Cache 1024 MB 256 MB
Noise (idle) 20 dB 28 dB
Fill Helium Helium
Interface SATA SATA
Failure rate (AFR) - -
Price / TB - $36.00
Buy No CA price yet
C$995
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.

HAT3320-20T

No Backblaze failure data for this model.

3yr warranty · 180 TB/yr rated · 1,200,000h MTBF

ST20000NT001

No Backblaze failure data for this model.

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