Hyper-V and Pass-Through Disks

This is a video of Hyper-V using Pass-through disk. As written: Video #9 in the Windows Server 2008 Hyper-V series, is this video focussed on the use of Pass Through Disks with Hyper-V. All the videos so far have used the .vhd file format for the virtual machines, of which there are 2 types; dynamic, and fixed. A dynamic VHD is something you specify to have a maximum size, say, 127GB, and yet it starts at 0kb in size. When you install a guest OS, or drop files into this dynamic VHD, it grows in size to reflect the size of the contents. If we installed an OS inside a VM with a 127GB dynamic VHD as its base, the guest OS would believe it has 127GB space available to it, and yet in the physical world, the actual WindowsOS.vhd file that’s sat on my machine is only, say, 6GB, as this is the size of the installed files.

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