Seagate · Enterprise
ST20000NM001H
Exos X24 20TB
SATA 6 Gb/s · 3.5-inch
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Compare alternatives ↓As an Amazon Associate I earn from qualifying purchases.The Seagate ST20000NM001H 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 | ST20000NM001H |
|---|---|
| Nominal capacity | 20 TB · 20000 GB |
| RPM | 7200 |
| Interface | SATA 6 Gb/s |
| Cache (MB) | 512 |
| Form factor | 3.5-inch |
| 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
- 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 ST20000NM001H, 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.
No verified exact-model ASIN is linked yet. This does not establish whether the model is currently available. Compare the alternatives below and check their listings.
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.
Toshiba · N300 Pro
HDWG82AXZSTB
20TB · SATA 6 Gb/s · CMR
Compare with ST20000NM001H →View on Amazon US ↗ASIN B0GWF54V5M · Check price and conditionWestern Digital · WD Gold
WD203KRYZ
20TB · SATA 6Gb/s · CMR
Compare with ST20000NM001H →View on Amazon US ↗ASIN B0DF9FK544 · Check price and conditionWestern Digital · WD Red Pro
WD201KFGX
20TB · SATA 6Gb/s · CMR
Compare with ST20000NM001H →View on Amazon US ↗ASIN B09TBF6GHJ · Check price and conditionST20000NM001H questions answered
What connection does ST20000NM001H need?
ST20000NM001H 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 ST20000NM001H 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 ST20000NM001H?
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.