We backup Hyper-V VMs from two hosts with Altaro VM backup. It could not be any easier to back up a VM server than it is with Altaro VM Backup. It is pretty much set it and forget it.
We do, of course, monitor our backups, and Altaro makes this very easy as well by using the monitoring software on our office computer. It connects to the software installed on the VM host, lets us know what is going on, and whether there have been any problems with backups or storage, etc. This is a very awesome backup software! Period!