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Seagate IronWolf Pro, 20TB NAS Internal HDD –CMR 3.5 Inch SATA 6 Gb/s, 7,200… 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 IronWolf Pro, 20TB NAS Internal HDD –CMR 3.5 Inch SATA 6 Gb/s, 7,200 RPM, 256MB Cache for RAID Network Attached Storage, Rescue Services (ST20000NEZ00/000)

Name: Seagate IronWolf Pro, 20TB NAS Internal HDD –CMR 3.5 Inch SATA 6 Gb/s, 7,200 RPM, 256MB Cache for RAID Network Attached Storage, Rescue Services
Brand: Unbranded
SKU: B09MKK1YCK
Price: 719.99 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 →

$719.99

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View Current Price on Amazon → Compare to similar nas & home servers

*Price sourced from Amazon.com. Last updated 2026-04-19. Price and availability subject to change.

Bottom line: The Seagate IronWolf Pro, 20TB NAS Internal HDD –CMR 3.5 Inch SATA 6 Gb/s, 7,200 RPM, 256MB Cache for RAID Network Attached Storage, Rescue Services (ST20000NEZ00/000) is a niche pick — read recent reviews before buying in the nas & home servers category, priced around $719.99. Compare close alternatives before committing.

Harness the power of IronWolf Pro 20TB HDDs, optimized for NAS, offering swift performance, high workload, and unsurpassed capacity to support your SMB. Built tough and always ready—with conventional magnetic recording technology (CMR) to store and protect crucial data and AgileArray firmware for exceptional RAID reliability and NAS compatibility—peace of mind is yours even during the heaviest workloads with 24x7 accessibility to store and protect crucial data, and a five-year limited warranty that includes three years of Rescue Data Recovery Services.

SpecPicks Verdict

SpecPicks scored Seagate IronWolf Pro, 20TB NAS Internal HDD –CMR 3.5 Inch SATA 6… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the nas & home servers category. Compare with similarly-priced alternatives in the nas & home servers category before committing. 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

✓ Highest Performance: Easily tackle heavy workloads in multi-user NAS environments
✓ 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

AgileArray: CMR HDD with AgileArray—NAS-optimized firmware providing exceptional RAID reliability and NAS compatibility during the heaviest of workloads.date transfer rate:5000.0 megabytes_per_second.Average Operating Power (W) : 7.7W, Operating Temperature (ambient, min °C) : 0, Operating Temperature (drive reported, max °C) : 65.
RV Mitigation: Enjoy consistent performance with built-in rotational vibration sensors providing reliable storage for NAS with little lag or down time
Highest Performance: Easily tackle heavy workloads in multi-user NAS environments
300TB/Year User Workload Rate: Always on, 300TB/year user workload rate with 24x7 accessibility provides peace of mind while supporting the heaviest of multi-user workloads
Warranty: Five-year limited product warranty protection plan and three year Rescue Data Recovery Services included
The available storage capacity may vary.

Full Specifications

Brand	Seagate
Color	Black
Warranty	Five-year limited product warranty protection plan and three year Rescue Data Recovery Services included
Model Name	IronWolf Pro
Read Speed	250 megabytes_per_second
Unit Count	1 Count
Form Factor	3.5-inch
Model Number	ST20000NE000
RV Mitigation	Enjoy consistent performance with built-in rotational vibration sensors providing reliable storage for NAS with little lag or down time
Built-In Media	IronWolf™ Pro 20TB SATA
Item Type Name	Hard Drive
Hard-Drive Size	20 TB
Mfr Part Number	ST20000NE000
Number of Items	1
Special Feature	Shock Resistant
Vibration/Rumble	Yes
Installation Type	Internal Hard Drive
Compatible Devices	Server, Storage System, Workstation
Data Transfer Rate	5000 megabytes_per_second
Enclosure Material	Information Not Available

Ready to buy?

Seagate IronWolf Pro, 20TB NAS Internal HDD –CMR 3.5 Inch SATA 6 Gb/s, 7,200 RPM, 256MB Cache for RAID Network Attached Storage, Rescue Services (ST20000NEZ00/000) 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.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-04-19. Price and availability subject to change.