I will give some more information. What version of Hyper-V are you running? 2012R2 or 2016? (It makes a difference as the backup architecture has changed)
For 2012 R2 storage vendors needed to write a hardware VSS provider that can leverage the VSS framework. If you have that provider, you can use it with Veeam B&R to achieve (more or less) the same as Veeam does with VMware. (You will need a offhost proxy for this) The difference is that we don't need to write additional code for this, by simply leveraging this framework, all the heavy lifting is done for us (again, more or less). That also means that for Hyper-V we are able to support much more storage vendors out of the box without doing something additionally. But it also means that the additional good stuff which we can do with VMware is not possible on that platform.
Any other questions
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