Seagate Exos X20 20TB 3.5" 7200RPM SATA III 6 Gb/s Internal HDD

Overview

The Seagate ST20000NM007D is a 3.5-inch internal hard drive designed to provide 20TB of storage capacity for servers and dense storage arrays. It connects via a SATA III 6 Gb/s interface and delivers sustained transfer speeds up to 285 MB/s. With a rotation speed of 7200 rpm and a 256 MB cache, this drive handles large files efficiently, making it suitable for streaming backups, running virtual machines, or processing analytics datasets.

Its helium-sealed enclosure reduces air friction, lowering power consumption and vibration, which is essential for data centers running multiple drives continuously. The drive supports both 512e and 4Kn sector formats, allowing seamless integration with existing controllers. Built for 24/7 operation, it offers a mean time between failures of 2.5 million hours and comes with a five-year limited warranty.

Key features

• High 20TB capacity that supports petabyte-scale storage needs without redesigning existing systems
• Fast data transfer rates up to 285 MB/s for smooth handling of large files and workloads
• Helium-sealed design reduces power consumption and vibration, improving reliability and efficiency
• Seagate PowerBalance technology optimizes energy use, ideal for racks with hundreds of drives running continuously
• Compatibility with both 512e and 4Kn sector formats simplifies integration with various storage controllers
• Engineered for continuous 24/7 operation, ensuring dependable performance in data-intensive environments
• Robust build quality supported by a 2.5 million hour MTBF and a five-year limited warranty

Key specs

• Capacity: 20TB
• Form factor: 3.5 inch
• Interface: SATA III 6 Gb/s
• Rotation speed: 7200 rpm
• Cache size: 256 MB
• Sustained transfer rate: up to 285 MB/s
• Sector formats supported: 512e and 4Kn
• Mean time between failures (MTBF): 2.5 million hours
• Warranty: 5 years limited

Connectivity and compatibility

This hard drive uses a SATA III 6 Gb/s interface, which is widely supported by most modern servers and storage arrays. Its support for both 512e and 4Kn sector formats allows it to work seamlessly with a variety of storage controllers without requiring additional converters. This flexibility makes it a practical choice for upgrading existing infrastructure or expanding cloud storage capacity.

Performance and reliability

The 7200 rpm rotation speed combined with a 256 MB cache ensures that data moves quickly and efficiently, even under heavy workloads. The helium-sealed enclosure reduces internal friction and vibration, which not only lowers power consumption but also extends the drive’s lifespan. With a mean time between failures of 2.5 million hours, this drive is built to handle continuous operation in demanding environments.

Ideal uses and environments

This model is well suited to data center operators managing large-scale cold storage, video surveillance systems that accumulate vast amounts of footage, and research teams capturing uncompressed sensor data. Its high capacity and reliable performance make it a strong choice for any setup requiring dependable, high-volume storage that runs around the clock.