Question : virtual machin backup

hi.I'm new to virtual machine and i need to install 2 hyper-v machine on a server 2008
i want to know how to backup the virtual machine
i using backup exec 12.5

Answer : virtual machin backup

You need to purchase an agent, just like you would for exchange or sql.
If you really want to backup the guests with backup exec, it would be cheaper to run an agent inside the guests, and back them up just as you would a physical.