On the Advanced page, you can modify the archiving settings for unrecognized cameras.
In this section, you can determine how to manage recordings of unrecognized cameras when space or time limit is reached, and thus utilize your recording storage much more efficiently.
To enable this function, tick Rotate recordings of unrecognized cameras based on its archiving rule, and the system will remove recording archives from the oldest or the camera will stop recording (depending on your archiving rule) when the space and time limit is reached. If you want to modify the rule, go to IP Camera, double click on the desired camera, and then go to the Recording Settings > Recording > Archive Rotation Settings.