What are the alternatives to the Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6…?

Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6… competes with other NAS & Home Servers products on SpecPicks. Use our Compare tool to view specs side-by-side, or browse the full NAS & Home Servers category for alternatives.

Seagate

Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST20000NT001)

Name: Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage
Brand: Seagate
SKU: B0B94MF4LP
Price: 669.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$669.99

As an Amazon Associate, SpecPicks earns from qualifying purchases.

Buy on Amazon — $669.99 Compare to similar nas & home servers

*Price sourced from Amazon.com. Last updated 2026-09-05. Price and availability subject to change.

Bottom line: The Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST20000NT001) is a niche pick — read recent reviews before buying in the nas & home servers category, priced around $669.99. Compare close alternatives before committing.

High Performance: All-CMR (conventional magnetic recording) portfolio enables consistent, industry-leading 24×7 performance allowing users to access data anytime, anywhere.Average Operating Power (W) - 7.7W, Operating Temperature (drive reported, max °C) : 65, Operating Temperature (ambient, min °C) : 0 Class-Leading Dependability: Up to 550TB/year workload rating, 2.5M hours MTBF, and 5-year limited warranty for unparalleled total cost of ownership (TCO) Peace of Mind with Data Recovery: Complimentary 3 year Rescue Data Recovery Services for a hassle-free, zero-cost data recovery experience

SpecPicks Verdict

SpecPicks scored Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the nas & home servers category. Seagate's nas & home servers lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

Common buyer scenarios for nas & home servers of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ The available storage capacity may vary.
✓ Backed by Seagate's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

High Performance: All-CMR (conventional magnetic recording) portfolio enables consistent, industry-leading 24×7 performance allowing users to access data anytime, anywhere.Average Operating Power (W) - 7.7W, Operating Temperature (drive reported, max °C) : 65, Operating Temperature (ambient, min °C) : 0
Class-Leading Dependability: Up to 550TB/year workload rating, 2.5M hours MTBF, and 5-year limited warranty for unparalleled total cost of ownership (TCO)
Peace of Mind with Data Recovery: Complimentary 3 year Rescue Data Recovery Services for a hassle-free, zero-cost data recovery experience
IronWolf Health Management: Helps protect data with prevention, intervention, and recovery recommendations to ensure peak system health
Optimized for NAS: AgileArray with dual-plane balancing, time-limited error recovery (TLER), and rotational vibration (RV) sensors to deliver top RAID performance in multi-bay environments
The available storage capacity may vary.

Full Specifications

Size	20TB
Brand	Seagate
Color	Black
Model	ST20000NTZ01
Warranty	5-Year-Manufacturer
UnitCount	1
ReleaseDate	2022-08-22T00:00:01Z
Manufacturer	Seagate
ItemPartNumber	ST20000NT001

Ready to buy?

Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST20000NT001) is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $669.99

*Price sourced from Amazon.com. Last updated 2026-09-05. Price and availability subject to change.