Windows 2008 Server R2 - System state

Hi,

I'm using Windows 2008 R2 Foundations and I'm running few roles on it (such as Active Directory etc.).

I'm using Windows Server Backup to backup whole server ("Full server" option in dialog box) to backup NAS (network share folder). Backup is completed succesfully, but when i open this detail of backup I see only dashes (except status) by the Server-state and System recovery rows. Is that ok? I know that is probably silly question, but I want to be sure- I don't want to find out that my Active Directory database is not backuped :-)

Thanks!