Hey @Erik_Carlin_Technica, welcome to the forum!
At the moment Duplicati is geared towards always available destinations, so there isn’t a built-in feature to “run backup when destination found” (like CrashPlan had).
There are some workarounds that can be done such as:
- schedule frequent backups with
--alternate-destination-marker
to abort the backup if the drive is NOT connected - schedule frequent backups with a
--run-script-before
step that checks for the destination and silently aborts if not available - use an external tool to detect the USB connect event and trigger a command-line backup execution
Try searching the forum for USB - you may find some other useful items such as: