Independent testing
How much independent testing exists for each nas device
Of the 11 nas devices we track, 10 have been physically measured by at least one independent lab. Below is every one, ordered by how much independent hands-on evidence stands behind it — densest first.
A coverage record, not a ranking of which is best.
| Product | Independent labs | Metrics measured | Outlets on record |
|---|---|---|---|
| TerraMaster F4-424 Pro | 2 | 5 | 2 |
| QNAP TS-264 | 2 | 3 | 2 |
| Ubiquiti UniFi UNAS Pro | 1 | 2 | 1 |
| UGREEN NASync DXP4800 Plus | 1 | 2 | 1 |
| ASUSTOR Lockerstor 4 Gen3 (AS6804T) | 1 | 1 | 1 |
| QNAP TS-464 | 1 | 1 | 1 |
| Synology DiskStation DS1522+ | 1 | 1 | 1 |
| Synology DiskStation DS224+ | 1 | 1 | 1 |
| Synology DiskStation DS923+ | 1 | 1 | 2 |
| Synology DiskStation DS925+ | 1 | 1 | 1 |
| Synology DiskStation DS1525+ | 0 | 0 | 1 |
Each figure is a count of what independent testers actually did — how we count. A low count means little independent evidence has been gathered yet, never that a product is worse. See also the NAS Devices buying guide and the reviewers we cite.