Rob Caron posted a link to the re-launched VSTS User Education team blog.  It includes a post of the procedures for backing up and restoring Team Foundation Server.  That includes the databases, SharePoint, reports, etc.  It also includes restoring TFS to a different server.  There have been lots of requests for this in the forum, so now's the time to give it a try.

They have also posted documentation on permissions and the default groups, roles, and permissions.

Since this is pre-release documentation, be sure to email them with any problems in the documentation.

[Update 3/2/06]  You can find updated procedures for restoring TFS at http://blogs.msdn.com/vstsue/articles/511396.aspx.