Drive comparison
ST3000DM002 vs ST3000DM007
Seagate Desktop HDD 3TB and Seagate BarraCuda 3TB, compared using published manufacturer specifications.
Seagate
Desktop HDD 3TB
ST3000DM002
SATA 6 Gb/s · 3.5-inch
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BarraCuda 3TB
ST3000DM007
SATA 6 Gb/s · 3.5-inch
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Amazon US · Used / renewed listing ↗ASIN B07X93H8MN
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What differs between these models?
- Cache (MB): ST3000DM002 lists 64; ST3000DM007 lists 256.
- Load/unload cycles: ST3000DM002 lists 300000; ST3000DM007 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 | ST3000DM002 | ST3000DM007 |
|---|---|---|
| Manufacturer | Seagate | Seagate |
| Product family | Desktop HDD | BarraCuda |
| Model number | ST3000DM002 | ST3000DM007 |
| Capacity (TB) | 3 | 3 |
| Interface | SATA 6 Gb/s | SATA 6 Gb/s |
| Cache (MB) | 64 | 256 |
| Form factor | 3.5-inch | 3.5-inch |
| Load/unload cycles | 300000 | 600000 |
| Average idle power (W) | 5.4 | Not recorded |
| Power-on hours per year | 2400 | 2400 |
| Workload rating (TB/year) | 55 | 55 |
| Average operating power (W) | 8 | Not recorded |
| Manufacturer limited warranty | 2 years (eligible new drives) | 2 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 210 | 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
ST3000DM002
Seagate Desktop HDD manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
ST3000DM007
Seagate BarraCuda manufacturer specifications ↗ · pages 3
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.