Seagate · Enterprise
ST20000NM002H
Exos X24 20TB
SATA 6 Gb/s · 3.5-inch · CMR
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View on Amazon US ↗New listing · ASIN B0CN5LH117
All 2 matched listings ↓As an Amazon Associate I earn from qualifying purchases.The Seagate ST20000NM002H is a 20TB Exos X24 hard drive for server and enterprise storage, using SATA 6 Gb/s in a 3.5-inch form factor.
Manufacturer specifications
| Model number | ST20000NM002H |
|---|---|
| Nominal capacity | 20 TB · 20000 GB |
| RPM | 7200 |
| Interface | SATA 6 Gb/s |
| Recording | CMR |
| Cache (MB) | 512 |
| Form factor | 3.5-inch |
| Recording evidence | Manufacturer recording specification ↗ |
| Recording verified | 2026-10-02 |
| Average idle power (W) | 6.3 |
| Power-on hours per year | 8760 |
| Manufacturer limited warranty | 5 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 285 |
Source: Seagate Exos X24 manufacturer specifications, pages 2. Reviewed 2026-09-07. Published specifications, not our benchmark results.
What the specifications mean
- CMR recording is specified for this exact model. Check enclosure support and workload limits before installing it in an array.
- Up to 285 MB/s sustained transfer, as specified by the manufacturer. This is not a measured game-loading or random-I/O result.
Before ordering
Match ST20000NM002H, 20TB and SATA 6 Gb/s against the selected offer. Check your system’s exact-model compatibility list and the seller’s warranty and return terms.
Amazon US listings
Exact model matches on Amazon.com. A verified ASIN identifies the product; it does not guarantee current stock. Check the selected variant, condition and seller.
Amazon US · ASIN B0CN5LH117
Amazon US · ASIN B0CN5LH117
Same-capacity alternatives with Amazon US links
These models share the drive type, interface class and capacity. Compare their specifications and your system requirements before choosing a replacement.
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Specifications & offers →View on Amazon US ↗ASIN B0GWF54V5M · Check price and conditionToshiba · MG10
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Compare with ST20000NM002H →View on Amazon US ↗ASIN B0BMQWLCCM · Check price and conditionWestern Digital · WD Gold
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Compare with ST20000NM002H →View on Amazon US ↗ASIN B0DF9FK544 · Check price and conditionST20000NM002H questions answered
Is ST20000NM002H CMR or SMR?
The manufacturer lists CMR recording for ST20000NM002H. Other models and capacities in the same family can differ.
What connection does ST20000NM002H need?
ST20000NM002H uses SATA 6 Gb/s and a 3.5-inch form factor. Match both with the computer, controller or enclosure. An M.2 slot, 2.5-inch bay and 3.5-inch bay are not interchangeable.
How much usable space does ST20000NM002H provide?
Its nominal capacity is 20000 GB, approximately 18626.5 GiB before formatting. The filesystem, reserved space and any RAID redundancy reduce usable capacity further.
What warranty is listed for ST20000NM002H?
Manufacturer specification: 5 years (eligible new drives). A renewed, used, OEM or imported offer can have different coverage. Check the serial number and seller terms before buying.