Backup Exec 2014 and Hyper-V

I have single Hyper-V (Windows Server 2012) host with few virtual machines. BE 2014 is installed directly on Hyper-V host. Do I need to install BE agent to virtual machines that I'm backing up? If I only do file level or completely VM restores I don't need the agent? For AD Domain Controller I need agent if I need to recover objects to AD?