Description
Exos X20 ST20000NM002D – Hard drive – 20 TB – internal – SAS 12Gb/s – 7200 rpm – buffer: 256 M
The Seagate Exos X20 20TB hard drive ST20000NM002D is an enterprise-class storage solution designed for hyperscale data centres, large-scale RAID arrays, and demanding business applications requiring exceptional capacity, reliability, and security.
This model features a robust 3.5-inch form factor with a SAS 12Gb/s interface, offering seamless performance for mission-critical environments. It uses Conventional Magnetic Recording (CMR) and is helium-sealed for improved efficiency and durability. With a 256MB cache, advanced error correction, and a spindle speed of 7200 RPM, the Exos X20 delivers both high throughput and low latency. Its PowerBalance and PowerChoice technologies enhance energy efficiency, while Seagate Secure protects sensitive data throughout the drive’s lifecycle. Hardware is engineered for maximum rack-space efficiency and optimal operation in intensive, 24/7 applications.
Key Features
- 20TB storage capacity for large-scale data deployment
- SAS 12Gb/s interface for high-speed enterprise connectivity
- Helium Sealed-Drive Design ensures low power consumption and enhanced reliability
- Conventional Magnetic Recording (CMR) supports consistent and high-capacity data storage
- 256MB buffer cache for rapid data access
- Spindle speed of 7200 RPM with a maximum sustained transfer rate of 285MB/s
- Dual port support and advanced parity protection for enterprise-grade redundancy
- PowerBalance and PowerChoice features optimise Watts per TB for cost-effective operation
- Mean Time Between Failures (MTBF) rated at 2,500,000 hours for dependable service
- Seagate Secure technology for enhanced data protection and secure retirement
System Requirements
- 3.5-inch SAS hot-swap drive bay with 12Gb/s support
- Compatible enterprise storage controllers and RAID adapters
- System support for full 20TB capacity per drive
- Stable rack-mount environment for optimal shock and vibration tolerance
- Power supply capable of supporting up to 9.8W (random read), 7W (random write), and 5.8W (idle) per drive
- Operating temperature range from 5°C to 60°C
- Firmware, drivers, and storage management software integration for Seagate Exos series
Case Use Example
In a global financial institution, the Seagate Exos X20 20TB drives help expand centralised private cloud and backup archives.
IT teams integrate these drives into modular, rack-mount arrays to efficiently manage vast transactional databases, supporting both performance and compliance requirements.
The drives’ robust build handles frequent read/write cycles and ensures continuous uptime, while digital environmental sensors and Seagate Secure safeguard sensitive data within zero-downtime operational frameworks.
Seagate ST20000NM002D – Questions and Answers
What is the capacity of the Exos X20 ST20000NM002D?
This model provides 20TB of storage, suitable for hyperscale and enterprise applications.
What interface and form factor are used in this drive?
It features a SAS 12Gb/s interface and 3.5-inch form factor for compatible enterprise environments.
What technologies enhance reliability and efficiency in this model?
The Exos X20 uses a helium-sealed design, CMR, PowerChoice, PowerBalance, advanced error correction, and Seagate Secure for reliability and security.
What is the operational power consumption of the drive?
Power consumption ranges from 5.8W (idle), up to 9.8W (random read) and 7.0W (random write) per drive under load.
What is the rated lifespan for this model?
The drive is rated with a MTBF of 2,500,000 hours and comes with a five-year limited warranty for enterprise reliability.
Summary
The Seagate Exos X20 20TB SAS hard drive (SKU: ST20000NM002D) is an advanced, high-capacity solution for enterprise and hyperscale data centres. Delivering reliability, efficiency, and robust security in a 3.5-inch design, it enables scalable storage with optimal performance for mission-critical business workloads.
| Feature |
Feature Value |
| HDD size |
3.5″ |
| HDD capacity |
20 TB |
| HDD speed |
7200 RPM |
| Interface |
SAS |
| Type |
HDD |
| Component for |
PC |
| HDD interface transfer rate |
12 Gbit/s |
| HDD sustained transfer rate |
272 MiB/s |
| HDD average transfer rate |
285 MB/s |
| Mean time between failures (MTBF) |
2500000 h |
| Power consumption (typical) |
5.8 W |
| Power consumption (read) |
9.8 W |
| Power consumption (write) |
7 W |
| Operating voltage |
5 / 12 V |
| Operating temperature (T-T) |
5 – 60 °C |
| Non-operating vibration |
2.27 G |
| Operating shock |
40 G |
| Non-operating shock |
200 G |
| Width |
101.8 mm |
| Height |
26.1 mm |
| Depth |
147 mm |
| Weight |
670 g |
| Quantity |
1 |
| Harmonized System (HS) code |
84717050 |
