Drive comparison
ST18000NM000D vs ST18000NM002D
Seagate Exos X20 18TB and Seagate Exos X20 18TB, compared using published manufacturer specifications.
Seagate
Exos X20 18TB
ST18000NM000D
12 Gb/s SAS · 3.5-inch
$689.00
Amazon US · New listing ↗ASIN B09MWKFG51 · as of Sep 12, 2026 04:49 UTC
Full specifications & all listings →Seagate
Exos X20 18TB
ST18000NM002D
12 Gb/s SAS · 3.5-inch
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What differs between these models?
- FIPS: ST18000NM000D lists No; ST18000NM002D lists Yes.
A larger cache, higher RPM or higher advertised sequential speed alone does not establish which drive is better for your workload.
Specifications side by side
| Specification | ST18000NM000D | ST18000NM002D |
|---|---|---|
| Manufacturer | Seagate | Seagate |
| Product family | Exos X20 | Exos X20 |
| Model number | ST18000NM000D | ST18000NM002D |
| Capacity (TB) | 18 | 18 |
| FIPS | No | Yes |
| Interface | 12 Gb/s SAS | 12 Gb/s SAS |
| Form factor | 3.5-inch | 3.5-inch |
| Manufacturer limited warranty | 5 years (eligible new drives) | 5 years (eligible new drives) |
Compatibility and buying checks
- A SAS drive requires a compatible SAS controller or backplane. A normal motherboard SATA port cannot operate a SAS drive.
- Compare new and renewed offers separately. The manufacturer specification does not guarantee the warranty or return policy of a marketplace seller.
Manufacturer sources
ST18000NM000D
Seagate Exos X20 manufacturer specifications ↗
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
ST18000NM002D
Seagate Exos X20 manufacturer specifications ↗
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.