Drive comparison
ST8000DM004 vs WD80EAAZ
Seagate BarraCuda 8TB and Western Digital WD Blue 8TB, compared using published manufacturer specifications.
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 →
Western Digital
WD Blue 8TB
WD80EAAZ
SATA 6Gb/s · 3.5-inch
$324.99
Amazon US · New listing ↗ASIN B0CMQ8XBBR · as of Sep 12, 2026 11:44 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?
- Interface: ST8000DM004 lists SATA 6 Gb/s; WD80EAAZ lists SATA 6Gb/s.
- Recording: ST8000DM004 lists SMR; WD80EAAZ lists CMR.
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 | ST8000DM004 | WD80EAAZ |
|---|---|---|
| Manufacturer | Seagate | Western Digital |
| Product family | BarraCuda | WD Blue |
| Model number | ST8000DM004 | WD80EAAZ |
| Capacity (TB) | 8 | 8 |
| Interface | SATA 6 Gb/s | SATA 6Gb/s |
| Recording | SMR | CMR |
| Cache (MB) | 256 | 256 |
| Form factor | 3.5-inch | 3.5-inch |
| Load/unload cycles | 600000 | Not recorded |
| Power-on hours per year | 2400 | Not recorded |
| Workload rating (TB/year) | 55 | Not recorded |
| Manufacturer limited warranty | 2 years (eligible new drives) | 2 years (eligible new drives) |
| RPM | Not recorded | 5640 |
| Physical sector size (bytes) | Not recorded | 4096 |
| Sustained transfer (up to MB/s) | Not recorded | 215 |
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
ST8000DM004
Seagate BarraCuda manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
WD80EAAZ
Western Digital WD Blue manufacturer datasheet ↗
Reviewed 2026-08-21. Published specifications; no independent benchmark or failure-rate claim.