I'm a little confused. I signed up and started a Redmine appliance on AWS, and it seems to be working fine. On the turnkey main page, it's says I'm 46% complete, next step is to Enable storage on Amazon S3, and then Backup Any Turnkey Appliance. So my question is, why do I want/need to backup the Appliance? Doesn't AWS do that for me? Or do they just say, "Great, you're running a server on our cloud, good luck with that, if it crashes your data is lost"?