machine and the underlying physical storage. Pass-through storage directly maps a
virtual machine to a physical disk accessible from the host, which limits Hyper-V
functionality and breaks one of the key principles of virtualization: the abstraction of
the virtual machine from the physical fabric.
Master It Why would VHD still be used with Windows Server 2012 Hyper-V?
Solution VHDX is superior to VHD in every way. However, if you need backward
compatibility with Windows Server 2008 R2 Hyper-V or Microsoft Azure IaaS (at
the time of this writing), then VHD should still be used.