Monitoring your system : Logging : About logs & logging : Log types
 
Log types
Each log message contains a Type (type) field that indicates its category, and in which log file it is stored.
FortiADC appliances can record the following categories of log messages:
Table 8: Log types
Log type
Description
Event
Displays administrative events, such as downloading a backup copy of the configuration, and hardware failures.
Traffic
Displays traffic flow information, such as HTTP/HTTPS requests and responses.
 
Avoid recording highly frequent log types such as traffic logs to the local hard disk for an extended period of time. Excessive logging frequency can cause undue wear on the hard disk and may cause premature failure.