Well, let's hope that never happens. But because you just never know, make sure you have a back up of your site. There are various back up utilities available for this purpose. Backing up to the server doesn't make sense since if it crashes, it's possible ALL your data will be gone and not recoverable.
Check with your Web host to see what kind of prevenative measures they take in case such an emergency arises. Remember, Webeze is NOT a host. We can not assist you with these matters and you need to take them up directly with your Web host. But, we'll certainly do our part to help you recover from this crash, should it ever happen. We keep backups of your site (static pages) at our facility (but we do not (currently) keep backups of your MySQL data).