Please input a HDD volume between 1MB and 2TB for
recording space. The recording data will replace the
oldest record when the total recording size exceeds this
value. For example, if each recording file is 6MB, and the
total cyclical recording size is 600MB, then the camera
will record 100 files in the specified location (folder) and
then will delete the oldest file and create new file for
cyclical recording.
Please note that if the free HDD space is not enough, the
recording will stop. Before you set up this option please
make sure your HDD has enough space, and it is better to
not save other files in the same folder as recording files.