Hello@listena,
On USG6650/6660/6670 and USG6680, a few logs and reports can be stored in memory. These logs can be viewed on the web page but are lost after the device is restarted. On USG6000 and USG9500, a few logs can be stored only in the log buffer. You can view system logs and service logs on the web page or run the display logbuffer command to view logs.
Glad to help you! Any further questions, let us know.