When you have a shared server, the possibility to recover from a real disaster is almost non-existent, unless you have backed up everything on a separate server. The actual dedicated server system is better able to take care of this all too familiar problem. The VPS Hosting that is backed up for you frequently is the most automatically safe way to deal with those disasters that do come along. Again, the hosting company that does provide the VPS system is constantly updating the applications, constantly backing up the information that you have on the server and is ready to take care of any issues that you may have concerning the safety and security of your pages.
This disaster recovery can be handled in a very expeditious way: By re-booting onto another node. This can be accomplished in a much faster way than a true dedicated server can be updated from back-ups. This truly does make the disaster recovery an almost painless way of making sure that everything is up to speed.