I was imagining setting up an old laptop as a backup to my main server with PostgreSQL replication for the Jellyfin DB and some sort of file synchronization for media and metadata. I have yet to manually setup PostgreSQL replication outside of a cloud provider where the process is automated, so I was planning it as an interesting learning experience. However, from the post above, it seems I was misinformed about the timeframe of PostgreSQL support in Jellyfin.