Dynamic expanding disk from Hyper-V does not expand

Posted on 2014-01-17
Medium Priority
Last Modified: 2014-11-12
I have a problem with a virtual server with a dynamic expanding disk which does NOT expand.

I have an installation of an SBS2011 running virtual on a Server 2008R2 with the hyper-v role.

My SBS is configured with an extra VHD disk for use for Exchange. This disk is a standard 127 GB dynamic disk.
When I could see that the data was growing rapidly I used the Edit Disk tool within the Hyper V Manager to expand this disk to 250 GB.
My problem is that even if I can see inside the disk tool that this vhd disk should expand to 250 GB it dosn't.

Any suggestions ? :-)
Question by:Ohmit
LVL 61

Accepted Solution

Cliff Galiher earned 2000 total points
ID: 39788074
Did you expand the partition in the guest OS? Just like a physical disk, if you installed a 250GB disk and only allocated a 127GB partition, the rest of the disk space will be unused. Even dynamic disks will not expand the partitions have been maxed out. The guest won't try to write into non-partitioned space, so the host has no reason to expand the disk.

Author Closing Comment

ID: 39788091
Your are a GOD! - a living oracle - a hero - a savior.
From now on you will be known as Sir Cliff. Stand up an receive your reconition.

Ohh and a nice weekend

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