For my Linux VM, no problem backing up the entire VM while the OS is running.
For my Windows BI VM, I have to shut down the VM before backing up, usually takes 15 minutes to back up 60GB of VM or so.
Camera is a precision tool, if you want License Plate Recognition, you can forget overall view and facial recognition.
It sounds like you need three cameras.
To add the camera as generic onvif, you'll have to enable onvif within the web interface of AXIS P3245-LV by adding an account and giving it a user name and password before adding it in BlueIris.
Camera are precision tool and it is only great at one thing. It sounds like you'd need two cameras to do what you want.
At work, I use a Q1798-LE to capture license plate, and a P1467-LE for overview.
Buy a house at 18, still not finished paying it off at retirement age of 67.
Sounds like a great deal for loan companies, 50 years of payments and interests.