Seagate IronWolf Pro 20TB NAS 3.5" SATA Hard Disk Drive

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Harness the Power of IronWolf Pro 20TB HDDs

Optimised 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.


CMR HDD with AgileArray—NAS-optimised firmware providing exceptional RAID reliability and NAS compatibility during the heaviest of workloads

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.

• Optimised for NAS with AgileArray.
• Actively protect your NAS with IronWolf Health Management.
• High performance means no lag time.
• Seagate® Rescue Data Recovery.
• Rotational Vibration (RV) sensors.
• Do more in multi-user environments.
• Designed for always on, always accessible 24×7 performance.
Capacity 20,000 GB
Edition Pro
Form Factor 3.5"
Flash Memory Size N/A
Flash Memory Type N/A
Height 26.11 mm
Rotation Speed 7200 rpm
Sector Size 512E
Cache 256MB
Access Time N/A
Host to/from Drive Sustained Transfer Rate  
Interface SATA 3.0 (6Gb/s)
Load/Unload Cycles  
Annualised Workload Rating 300 TB/yr
Non-Recoverable Read Errors per Bits Read <1 in 10^15
Max. Operating Shock 40/40 G
Max.Power Usage 7.7 W
Dimensions 101.85 x 26.11 x 146.99 (WxHxD mm)
Package Type OEM