Appcmd can be used to backup and restore IIS7 configuration, it will backup global server configuration wich includes: There might be additional files depending on your specific configuration. Backup's are located in "C:\Windows\System32\inetsrv\backup"

    administration.config

    applicationHost.config

    mbschema

    metabase

    redirection.config

You can the following 2 command to make a backup

    Appcmd add backup <-- this auto names the backup to current date time

    Appcmd add backup "My Custom Name"

You'll get an output like this.

    BACKUP object "20070808T154237" added

    BACKUP object "My Custom Name" added

    

If you want to restore a backup, you can list available backups with this command.

    Appcmd list backups

This gives you a list like this

    BACKUP "20070808T154237"

    BACKUP "My Custom Name"

So now you can chose your backup to restore and you do it with this command

    Appcmd restore backup "20070808T154237"

Depending on your configuration it can take from a few seconds to a few minutes, but it'll give an output like this once finsihed.

    Restored configuration from backup "20070808T154237"