Two instances of AdGuardHome … though tempted to switch to the new Gravity.

Services that need a lot of storage, I host at home (Gonic, Jellyfin, Audiobook Shelf etc). Services where I care about availability when I’m away from home, I host on a VPS (Vaultwarden, Synapse, Wordpress, DokuWiki etc).

Personally, I always use rsync for these sorts of jobs. Works over SSH so don’t need anything on the server except SSH, if the trasfer gets interrupted it will resume from where it left of. Overhead from SSH is pretty minimal, but if you really want thigns to go as fast as possible, you can setup an rsync server …

If you don’t want to use rsync, just use SFTP or SCP.