If you want the instances to sync, you just need to sync the directory. (I currently use nextcloud sync for this, but in the past I used synching and before that btsync)

If they dont try to modify the files at the same time (with sync delay) there won’t be any issues. If they do grow out of sync, you can fix pretty easily with db repair.

Seriously, you could yeet it at least 300m that way, maybe more since they’re less than 90kg.

Churning through senseless trends is a time honoured tradition. Just like beef stroganoff.