Windows server backup has the gui console wbadmin msc that allows to create and manage hyper v backups create backup schedule etc.
Windows server backup 2016 hyper v.
In windows server 2016 we see two files appear the first time you take a backup of a vm with configuration version 8 0 on windows server 2016 hyper v.
The inbox capabilities allow for agentless backups remove the dependency on host level vss infrastructure and by introducing cbt in the product.
To backup a vm just start a simple wizard select which vms from your hyper v server have to be backed up and where the backups are to be saved and specify the backup schedule.
A mrt file and a rct file in the location of the virtual hard disks.
These files appear per virtual hard disk and are there to stay.
Yes hyper v 2016 do not have gui you may check if the following method could connect to the hyper v server 2016 to manage the windows server backup with gui remotely.
This approach still utilizes vss inside the virtual machine for backup purposes but no longer uses vss in the host operating system.
They did so by leveraging and enhancing the native capabilities of hyper v.
Hyper v wmi based backup.