# Log File High-Water Mark

This parameter controls the extent of File "fullness" which will trigger unscheduled log download sessions with eligible destinations. This is a protection against inadvertent overflow of the Log File that would otherwise result in the loss of logged data. Please note that for this function to work at least one FAX or RDT destination must be configured.

The default percentage is 90%. If it is decided that you never want the Catalyst to automatically “off-load” the logfile data, check the “Never initiate sessions to off-load log file data” checkbox.