Hi, @512user.
Greetings from the Roku Community!
We appreciate you reaching out to us about the SD card on your camera. We're here to provide some information.
Please be aware that when the storage is full, the oldest files are overwritten to make room for new video clips. In this case, is there any error message showing once you access the SD card?
Furthermore, you may visit this support article on how to install a micro SD card in your Roku Smart Home camera
We hope you'll find this information helpful. Let us know if there's anything else we could further assist you.
Thanks,
The Roku Community Team
Reynan L.
Roku Community Moderator