2012 Server - Wbadmin System state backup

There is a very easily way to backup system state Windows 2012 Server and it's the following (using windows server backup)
  1. Execute cmd with administrative rights
  2. wbadmin start systemstatebackup -backuptarget:externalhd
  3. I recommend instead you use wbadmin start backup -allCritical for AD restore See link)
 In this way you would have relative backup on external drive