# Safe degradation (failure hierarchy)

Manufacturing degrades. IntelFactor degrades safely.

| Failure scenario        | System behavior                                             | Operator indication                          |
| ----------------------- | ----------------------------------------------------------- | -------------------------------------------- |
| Internet down           | Local inspection continues; events buffer locally           | “Offline mode: inspection active”            |
| Site server down        | Edge nodes continue; cross-line analytics unavailable       | “Site analytics unavailable”                 |
| Camera disconnected     | Station pauses; others unaffected; watchdog retries         | “Camera offline: manual inspection required” |
| Edge node crash         | Watchdog restarts services; state recovered from local DB   | “Restarting → recovered”                     |
| Disk full               | Oldest optional buffers deleted first; metadata never stops | “Storage critical”                           |
| Explanation model fails | RCA degrades to statistical-only output                     | “RCA basic mode”                             |

{% hint style="warning" %}
This table is the acceptance baseline. If any failure stops metadata logging, it’s a deployment blocker.
{% endhint %}


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