Cannot increase VHD size when VM Shutdown, but can when stopped

Using VMM 2008 to manage a 3 node HyperV 2008 R2 cluster.  We have several 2008 R2 VMs with dynamic VHDs.  We wanted to increase the size of the VHD.  We performed a "shutdown" through VMM and then went to properties and the option to manipulate the VHD size was greyed out.   When we did a "stop" from VMM and tried we had the ability to change the VHD size.   Obviously shutdown is better than stop as the stop does not appear to cleanly shut down the OS.

Is my understanding of STOP and SHUTDOWN incorrect, do I have my order of operatings wrong, or is this a know weirdness?


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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
STOP is like removing the power a physical machine.

Shut Down sends a shut down message to the guest VM.

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Windows Server 2008

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