Domoticz

I tried to reply to a post... seems to be gone

What about a synology nas with power over ethernet cameras?
This setup van record and do motion detection

I use this: https://www.ispyconnect.com/

It's free and have great options. You can connect almost every camera to it. Also you send commands with an url, for instance to trigger a specific camera. I use it together with Domoticz as an alarm system. When the alarm is on, Domoticz sends an url to iSpy from the room the alarm came from.

I make my own camera's with a Rapsbery Pi and this great software: https://github.com/ccrisan/motioneye/wiki
You can use the Raspberry camera, but I connect an USB camera to the PI to get better video. For instance this one is working great:
https://www.logitech.com/en-us/product/ ... 70?crid=34