Drive comparison
ST16000NM000J vs ST16000NTZ01
Seagate Exos X18 16TB and Seagate IronWolf Pro 16TB, compared using published manufacturer specifications.
Seagate
Exos X18 16TB
ST16000NM000J
SATA 6 Gb/s · 3.5-inch
$711.00
Amazon US · New listing ↗ASIN B08JV7N6J1 · as of Sep 12, 2026 11:42 UTC
Full specifications & all listings →Seagate
IronWolf Pro 16TB
ST16000NTZ01
SATA 6 Gb/s · 3.5-inch
Check current Amazon price
Amazon US · New listing ↗ASIN B0B94NFYWX
Full specifications & all listings →As an Amazon Associate I earn from qualifying purchases. Match the selected variant, condition and seller terms before ordering.
What differs between these models?
The recorded specifications do not establish a performance advantage for either model. Compare compatibility, the exact offer and the manufacturer documents below.
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 | ST16000NM000J | ST16000NTZ01 |
|---|---|---|
| Manufacturer | Seagate | Seagate |
| Product family | Exos X18 | IronWolf Pro |
| Model number | ST16000NM000J | ST16000NTZ01 |
| Capacity (TB) | 16 | 16 |
| RPM | 7200 | 7200 |
| Interface | SATA 6 Gb/s | SATA 6 Gb/s |
| Cache (MB) | 256 | 256 |
| Form factor | 3.5-inch | 3.5-inch |
| Average idle power (W) | 5.1 | Not recorded |
| Power-on hours per year | 8760 | 8760 |
| Manufacturer limited warranty | 5 years (eligible new drives) | 5 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 270 | 270 |
| Recording | Not recorded | CMR |
| Workload rating (TB/year) | Not recorded | 550 |
| Average operating power (W) | Not recorded | 7.6 |
| Rotational vibration sensors | Not recorded | Yes |
Compatibility and buying checks
- Compare new and renewed offers separately. The manufacturer specification does not guarantee the warranty or return policy of a marketplace seller.
Manufacturer sources
ST16000NM000J
Seagate Exos X18 manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
ST16000NTZ01
Seagate IronWolf Pro manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.