@nmdange, say who? You because you tried it & it works or you because you read it somewhere?
Obviously it does NOT
work as reported here
I can confirm it does not work.
We have a hyper-V cluster running Windows server 2016 running latest march CU.
On top of which we created a cluster with two VMs running Windows server 2016 with latest march CU with VHD Set (VHDS).
We are unable to backup them in a constistent manner. It is also impossible to take checkpoint from GUI or from CLI (we get an access denied):
[VmmsAsyncSnapshotTask::RunTask()@307] Caught class Vml::VmAccessDeniedException: Access is denied. (0x80070005)
We opened a case with MS Support who confirmed that during Snapshot creation it uses functions to verify it has full and privileged access to the .VHDS file. Those functions have a bug (or more it seeams that the namespaces exist in code but are not really implemented). Anyway, a fix is in progress and might be available in April (no official release date yet).