Drive comparison
ST6000NE0021 vs WD60EFZX
Seagate IronWolf Pro 6TB and Western Digital WD Red Plus 6TB, compared using published manufacturer specifications.
Seagate
IronWolf Pro 6TB
ST6000NE0021
SATA 6 Gb/s · 3.5-inch
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Full specifications & all listings →Western Digital
WD Red Plus 6TB
WD60EFZX
SATA 6Gb/s · 3.5-inch
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What differs between these models?
- RPM: ST6000NE0021 lists 7200; WD60EFZX lists 5640.
- Interface: ST6000NE0021 lists SATA 6 Gb/s; WD60EFZX lists SATA 6Gb/s.
- Manufacturer limited warranty: ST6000NE0021 lists 5 years (eligible new drives); WD60EFZX lists 3 years (eligible new drives).
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 | ST6000NE0021 | WD60EFZX |
|---|---|---|
| Manufacturer | Seagate | Western Digital |
| Product family | IronWolf Pro | WD Red Plus |
| Model number | ST6000NE0021 | WD60EFZX |
| Capacity (TB) | 6 | 6 |
| RPM | 7200 | 5640 |
| Interface | SATA 6 Gb/s | SATA 6Gb/s |
| Form factor | 3.5-inch | 3.5-inch |
| Rotational vibration sensors | Yes | Not recorded |
| Manufacturer limited warranty | 5 years (eligible new drives) | 3 years (eligible new drives) |
| NAS bays | Not recorded | 8 |
| Recording | Not recorded | CMR |
| Cache (MB) | Not recorded | 128 |
| Workload rating (TB/year) | Not recorded | 180 |
| Physical sector size (bytes) | Not recorded | 4096 |
| Sustained transfer (up to MB/s) | Not recorded | 185 |
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
ST6000NE0021
Seagate IronWolf Pro manufacturer specifications ↗
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
WD60EFZX
Western Digital WD Red Plus manufacturer datasheet ↗
Reviewed 2026-08-21. Published specifications; no independent benchmark or failure-rate claim.