What is the best way to back up as much as possible of Debian 12 on my laptop to a server that has SSH available? I am currently backing up my users /home/<homedir> folder, but I would like to be able to nuke and restore the system from a backup.
I have ventoy on an external drive if that helps any.
P.S. I would like to be able to do incremental backups too.
Relax And Recover for os level backups. https://relax-and-recover.org/
With rear you can back up your system to pretty much anything. Mounted volume, USB drive, even to a bootable iso.
I use weekly rear backups for my system, and hourly Borg backups for diffs/point in time restore of user data, but you could use rear for an entire system snapshot as well.