Disclaimer: Backup Facility is probably the wrong word here, but I currently nothing else comes to my mind

My parents would like to have a HomeAssistant. While thinking through the setup in their local network, dynDNS stuff aso., I realized that I could use their open ports to regularly backup my own stuff to there house as remote backup.

Now, as far as I understand, there is no native support for this in HomeAssistant. I just came across the Nextcloud Add-On, which spins up a full Nextclou instance in the background?

If so, my question would be about performance/hardware requirements for ~10 users:

• can I run this smoothly on a Pi 5 (8GB)?
• or do I need 16GB?
• is the standard kit with passive cooling enough, or rather buy active cooling (with a fan?)
• is this add-on maintained in a way, that I wouldn’t have to worry about critical security bugs, that aren’t covered by normal Nextcloud releases?

Thanks beforehand :)