Reolink cameras support SD card recording. When the SD card is full, we can set up the camera to overwrite the oldest recordings one by one so that the SD card can continue to record. 

Applies to: All Reolink cameras which have a microSD card slot.

Here are some articles to guide you to set up overwrite when SD card is full.

How to Set up Overwrite When SD Card is Full via Reolink App

How to Set the HDD/SD Card to Overwrite via Reolink Client (New Client)

How to Set up Overwrite When SD Card is Full via Web Browser