Andrew Barton (he’s a blogging machine actually; we just gave it the name ‘Andrew Barton’ ;) ) is at it again .  He has written up a new post on how to automatically and periodically back up Management Packs automatically using PowerShell.

Have a look:

http://blogs.technet.com/b/wincat/archive/2013/03/22/automating-backups-of-custom-management-packs-in-service-manager-2012.aspx

Thanks Andrew!