Drive comparison
ST8000DM002 vs ST8000DM004
Seagate Desktop HDD 8TB and Seagate BarraCuda 8TB, compared using published manufacturer specifications.
Seagate
Desktop HDD 8TB
ST8000DM002
SATA 6 Gb/s · 3.5-inch
$377.48
Amazon US · New listing ↗ASIN B019OSCLH8 · as of Sep 12, 2026 10:56 UTC
Full specifications & all listings →
Seagate
BarraCuda 8TB
ST8000DM004
SATA 6 Gb/s · 3.5-inch
$249.99
Amazon US · New listing ↗ASIN B07H289S7C · as of Sep 12, 2026 10:58 UTC
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?
- Load/unload cycles: ST8000DM002 lists 300000; ST8000DM004 lists 600000.
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 | ST8000DM002 | ST8000DM004 |
|---|---|---|
| Manufacturer | Seagate | Seagate |
| Product family | Desktop HDD | BarraCuda |
| Model number | ST8000DM002 | ST8000DM004 |
| Capacity (TB) | 8 | 8 |
| Interface | SATA 6 Gb/s | SATA 6 Gb/s |
| Cache (MB) | 256 | 256 |
| Form factor | 3.5-inch | 3.5-inch |
| Load/unload cycles | 300000 | 600000 |
| Average idle power (W) | 7.2 | Not recorded |
| Power-on hours per year | 2400 | 2400 |
| Workload rating (TB/year) | 55 | 55 |
| Average operating power (W) | 9 | Not recorded |
| Manufacturer limited warranty | 2 years (eligible new drives) | 2 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 220 | Not recorded |
| Recording | Not recorded | SMR |
Compatibility and buying checks
- One or both drives use SMR recording. Check sustained-write and array requirements before choosing one for a NAS or a write-heavy workload.
- Compare new and renewed offers separately. The manufacturer specification does not guarantee the warranty or return policy of a marketplace seller.
Manufacturer sources
ST8000DM002
Seagate Desktop HDD manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
ST8000DM004
Seagate BarraCuda manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.