Seagate 20TB 3.5′ IronWolf PRO NAS SATA 6Gb/s 7200RPM 256MB Cache HDD. 5 Years Warranty | ST20000NT001

IronWolf and IronWolf PROTough. 24×7 performance with multi-user technology for higher user workloads, and the first drives built for NAS to be equipped with rotational vibration (RV) sensors. Ready. AgileArray™ provides for drive balance, RAID optimization and advanced power management. Scalable. Up to 10TB means there’s a scalable solution for any NAS use case.

•Optimized for NAS with AgileArray.™ AgileArray is built for dual-plane balancingand RAID optimization in multi-bay environments with the most advanced powermanagement possible.
•High performance means no lag times or downtime for users during high traf ctime for the NAS. Seagate leads the competition with the highest performance in NAS-class drives.
•Range of capacities up to 20TB. More capacity options mean more choices that will fit within the budget. Seagate provides a scalable solution for any NAS use-case scenario.
•Get ahead with more cache. IronWolf provides high-cache options allowing your NAS to serve data faster.
•Do more with multi-user technology. Enables user workload rate of 550TB/year. Multiple users can con dently upload and download data to the NAS server, knowing it can handle the workload, whether you’re a creative professional or small business.

Specifications
Capacity 20TB
Standard Model Number ST20000NT001
Interface SATA 6Gb/s
Drive Bays Supported Unlimited
Recording Technology CMR
Drive Design (Air or Helium) Helium
Workload Rate Limit (WRL) 550
Rotational Vibration (RV) Sensors Yes
Cache (MB) 256
Mean Time Between Failures (MTBF, hours) 2,500,000
Non-recoverable Read Errors per Bits Read, Max 1 per 10E15
Power-On Hours (per year) 8,760
Sector Size (Bytes per Logical Sector) 512E
Rescue Data Recovery Services (years) 3
Limited Warranty (years) 5
Spindle Speed (RPM) 7,200
Interface Access Speed (Gb/s) 6.0, 3.0, 1.5
Max. Sustained Transfer Rate OD (MB/s) 285MB/s
Rotational Vibration @ 10-1500 Hz (rad/s) 12.5

Product Last Updated: 11/12/2025

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