I guess that's no way to backup server configuration/setup, a lot part of my effort comes from reinstall the server, configuring the mySQL, ROR, etc. Possible to automatic backup those too?
Version control like Git or other would be best for your Rails stuff. The apps should contain your DB schema. As far as your MySQL, you should be able to configure it to dump its backups into your Dropbox if you have enough space.
When you get your imaging set up, it will let you roll back to a point in time, so the server should come back.
When you get your imaging set up, it will let you roll back to a point in time, so the server should come back.