Seagate IronWolf Pro 3.5" 20TB, 7200 RPM, 256MB, 550 WRL, SATA III Hard Drive for NAS

The Seagate IronWolf Pro ST20000NT001 is a 3.5-inch internal hard drive with a storage capacity of 20 TB, designed for multi-user network-attached storage (NAS) environments. It utilizes Conventional Magnetic Recording (CMR) technology to ensure consistent write performance during demanding, continuous workloads. The drive's firmware includes AgileArray technology, which is engineered to optimize RAID performance and power management in multi-bay enclosures. It is built for 24/7 operation, making it suitable for always-on server and NAS applications.

This model operates at a spindle speed of 7200 RPM and is equipped with a 256 MB cache to facilitate faster data access and reduce latency. To maintain performance integrity in systems with multiple drives, it incorporates rotational vibration (RV) sensors that mitigate the impact of vibration from adjacent hardware. The drive is rated for a workload of 550 TB per year and has a Mean Time Between Failures (MTBF) of 2.5 million hours, reflecting its focus on long-term reliability. It also supports S.M.A.R.T. for drive health monitoring.

• 20 TB storage capacity
• 3.5-inch form factor
• SATA 6 Gbit/s interface
• 7200 RPM spindle speed
• 256 MB cache buffer
• 550 TB per year workload rate limit
• 2.5 million hours Mean Time Between Failures (MTBF)
• Integrated Rotational Vibration (RV) sensors
• Supports 24/7 continuous operation
• 5.5 W power consumption at idle
• Dimensions of 101.85 × 146.99 × 26.11 mm