Seagate Enterprise Exos X20 internal hard drive 20 TB 7200 RPM 3.5 inch Serial ATA III

20 TB SATA III 6 Gb/s hard drive with high rack-space efficiency, designed for hyperscale cloud data centres, large-scale data centres and enterprise storage arrays. The Seagate Exos X20 provides maximum capacity in a 3.5" form factor (26.1 x 101.85 x 147 mm) and is intended for demanding workloads such as big data, distributed file systems, backup and centralised surveillance.

Advantages

Exos X20 drives are based on a proven platform deployed by major cloud service providers and offer enterprise-class reliability and security features. The design emphasises capacity density and efficient power management while maintaining high sustained transfer rates and hardware encryption options.

Key specifications

• Capacity: 20 TB
• Interface: SATA III, 6 Gb/s
• Form factor / dimensions: 3.5" — 26.1 x 101.85 x 147 mm
• Workload rating: 550 TB/year
• MTBF: 2.5 million hours (2.5M-hr)
• Sustained transfer rate: up to 285 MB/s
• Security: Password protection and AES-256 hardware encryption (Seagate Secure)

How to use

Install the drive into a compatible 3.5" bay or rack enclosure with SATA III support and ensure proper cooling and power delivery. Configure RAID or storage array settings according to your system requirements; enable PowerChoice or PowerBalance options if available to tune power consumption for active and idle states. For encrypted deployments, set up Seagate Secure features and manage passwords or encryption keys following your organisation's security policies.

Recommendations

Use Exos X20 in high-capacity, enterprise or hyperscale environments such as large RAID arrays, distributed file systems (Hadoop, Ceph), backup-to-disk solutions and centralised surveillance systems. Regularly monitor drive health, maintain adequate airflow, and follow vendor guidelines for firmware and encryption key management.