My dad also used to self-host. Now I run all of the services he used to, and more.
Anyway, his server is still around so I thought I might as well use it for an offsite backup box, I run a matrix instance and nextcloud, as well as other things. But those two are the contents of which matter most.
How would you set this up?
Just a nightly rsync over sftp? That seems ineffecient. Is there a best way ro do this?
I personally run a ProxMox cluster. I run both Windows and Linux servers. I perform local full-VM backups using the hypervisor to a USB disk. That gives me a fast way to restore VMs if I need to. I also run Veeam, which handles the offsite copy and provides granular file restores. It’s nice because the community edition supports hardened disk immutability, which can help prevent ransomware attacks and Unfortunate Incidents. That just runs over SSH, and installs a Veeam agent/repo on the remote linux box.