Seagate
Seagate ST20000NM000D Exos X20 20TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" internal hard drive
Enterprise-class 20TB CMR drive spinning at 7200 RPM with 256MB cache and a SATA 6.0Gb/s interface for high-capacity storage arrays
- InterfaceSATA 6.0Gb/s
- Capacity20TB
- NAND Flash Memory TypeHard Drive
- Recording TechnologyCMR
- RPM7200 RPM
- Cache256MB
- 20TB capacity stores massive datasets in a single 3.5" drive
- 7200 RPM spindle speed delivers fast data access for enterprise workloads
- 256MB cache buffers bursts to sustain high throughput
- CMR recording technology ensures consistent write performance
- Helium-sealed design reduces power draw per terabyte
Exos X20 20TB enterprise hard drive
The Seagate Exos X20 ST20000NM000D is a 3.5-inch internal hard drive built for enterprise storage environments. It delivers a 20TB capacity using conventional magnetic recording technology spinning at 7200 RPM with a 256MB cache. A SATA 6.0Gb/s interface connects the drive to host systems.
Suited for high-capacity RAID and archive workloads
This drive targets operators who need maximum terabytes per rack in cloud data centres or massive scale-out deployments. Its helium-sealed design and PowerBalance feature optimise watts per terabyte for total cost of ownership savings. Buyers needing solid-state speeds or a non-SATA interface should consider other storage types.
20TB CMR capacity on SATA 6.0Gb/s
The single specification that determines fit is the 20TB capacity delivered through CMR recording on a SATA 6.0Gb/s interface. This combination defines the drive's maximum sequential throughput and its compatibility with existing SATA backplanes and controllers. Verify that your enclosure and controller support 20TB SATA drives before purchase.
Highlights
- 20TB capacity stores massive datasets in a single 3.5" drive
- 7200 RPM spindle speed delivers fast data access for enterprise workloads
- 256MB cache buffers bursts to sustain high throughput
- CMR recording technology ensures consistent write performance
- Helium-sealed design reduces power draw per terabyte
Specifications
| Brand | Seagate |
|---|---|
| Series | Exos X20 |
| Model | ST20000NM000D |
| Interface | SATA 6.0Gb/s |
| Capacity | 20TB |
| NAND Flash Memory Type | Hard Drive |
| Recording Technology | CMR |
| RPM | 7200 RPM |
| Cache | 256MB |
| Average Latency | 4.16ms |
| Features | Market-leading 20TB HDD offering the highest capacity available for more petabytes per rack* Highly reliable performance with enhanced caching, making it the logical choice for cloud data center and massive scale-out data center applications Hyperscale SATA model tuned for large data transfers and low latency PowerBalance feature optimizes Watts/TB Maximize total cost of ownership savings through lower power and weight with helium sealed-drive design Proven helium side-sealing weld technology for added handling robustness and leak protection Digital environmental sensors to monitor i |
| Usage | For Enterprise Storage |
| Form Factor | 3.5" |
| Height (maximum) | 26.10mm |
| Width (maximum) | 101.85mm |
| Length (maximum) | 147.00mm |
| Shipping weight | 0.91 kg |
| Package size | 196 × 152 × 76 mm |
Questions about this item
Will this 20TB 3.5" SATA 6.0Gb/s drive work in a system that currently runs older 3.5" SATA drives?
Yes, it uses the standard SATA 6.0Gb/s interface and 3.5" form factor, so it connects to the same SATA data and power cables as your existing drives.
How can I verify the ST20000NM000D is performing correctly after installation?
The drive should identify as a 20TB CMR device spinning at 7200 RPM with 256MB cache; check SMART data for zero reallocated sectors and expect average latency near 4.16ms during benchmarks.
What comes in the box and what must I provide separately?
Packing varies between retail and OEM; the drive itself is the only guaranteed item, so plan to source mounting screws and SATA data and power cables separately.
New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.
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