Seagate IronWolf Pro 20TB 3.5" 7200RPM SATA III 6 Gb/s Internal NAS HDD

Overview

The Seagate ST20000NT001 is an internal NAS hard drive designed to provide 20TB of reliable storage for Network Attached Storage systems and enterprise RAID setups. It features a 7200 RPM spindle speed and a 256 MB cache, delivering sustained transfer rates up to 285 MB/s through a SATA III 6 Gb/s interface. This combination ensures smooth handling of demanding tasks like 4K video editing, virtualization, and large-scale backups.

Built for continuous operation, the drive incorporates AgileArray firmware to optimize performance in multi-drive environments. Its robust design supports heavy workloads and long-term reliability, making it a solid choice for creative professionals, small businesses, and home lab users who require ample storage without compromising uptime.

Key features

• 20TB capacity using conventional magnetic recording for consistent and dependable storage performance
• 7200 RPM spindle speed paired with a 256 MB cache to maintain high data throughput during intensive operations
• SATA III 6 Gb/s interface enabling data transfer speeds up to 285 MB/s for efficient file access and backups
• AgileArray firmware enhances RAID stability with dual-plane balancing, time-limited error recovery, and rotation-vibration sensors
• Engineered for 24/7 operation with a workload rating of 550 TB per year, supporting continuous data access and writes
• Mean time between failures of 2.5 million hours, ensuring durability for mission-critical storage environments
• Includes three years of Rescue Data Recovery Services to minimize downtime in case of data loss
• Backed by a five-year limited warranty for long-term peace of mind

Key specs

• Capacity: 20 TB
• Form factor: 3.5 inch
• Spindle speed: 7200 RPM
• Cache size: 256 MB
• Interface: SATA III 6 Gb/s
• Sustained transfer rate: up to 285 MB/s
• Workload rating: 550 TB per year
• Mean time between failures (MTBF): 2.5 million hours
• Warranty: 5 years limited
• Data recovery service: 3 years Rescue Data Recovery included

Connectivity and compatibility

This hard drive connects via a SATA III 6 Gb/s interface, which is widely supported by most NAS enclosures and enterprise RAID systems. Its 3.5-inch form factor fits standard drive bays, making it compatible with a broad range of storage setups. The drive’s firmware and vibration sensors are optimized for multi-drive environments, ensuring stable performance when installed alongside other drives.

Ideal uses and environments

The Seagate IronWolf Pro 20TB is well suited to creative studios managing large media libraries, small businesses that require reliable file servers, and home lab enthusiasts who need scalable storage with high uptime. Its endurance and performance make it a strong option for environments where continuous data access and heavy workloads are common, such as video editing, virtualization, and backup solutions.