$670 ($33.50/TB)
Best price at Amazon · US
Last checked Jul 21, 2026 · Price and availability subject to change.
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Specifications

Capacity
20 TB
Technology
CMR
Class
NAS-Pro
RPM
7200
Cache
256 MB
Noise (idle / seek)
28 / 32 dB
Fill
Helium
Interface
SATA
Form factor
3.5"
Data confidence
High

Is ST20000NT001 SMR or CMR? →

Reliability

No large-scale failure-rate data - Backblaze tracks mostly datacenter-class drives, so consumer/SMR models rarely appear. Reliability rankings →

Warranty5 years
Rated workload300 TB/yr
MTBF1,200,000 hrs

Pro NAS drive for up to 24-bay systems and 24/7 use; includes Rescue data recovery.

Manufacturer-rated specs (Manufacturer spec), not observed failure data.

Price history

US · cheapest per day $670 latest
zoomed · drag to zoom
$720 $525 $330 Jul 2024 Nov 2024 Apr 2025 Aug 2025 Feb 2026 Jul 2026

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