Brian Harry recently blogged about a cool new feature in the next version of TFS Power Tools (no date yet). Backing up and Restoring your TFS Server is the most exhaustive post and makes for some interesting readin while Backing up your TFS Server with Sharepoint and Reporting more or less just states that you can backup the Sharepoint and Reporting parts of TFS as well.

Now, lets hope they add a tool for restoring the backups as well