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Hyper-V Virtual Machines go to Paused State

Host is Windows Server 2008 R2 server core.  It uses Hyper-V.  There are 4 guests machines.   After months of stability I get this "Paused State" error.  After clicking resume, they seem to run a few seconds and return to paused state.  The only way out is to restart the server and I don't like to do this to a production machine.  I read some articles on-line and the recommendation is to free up space in the cluster drive.  I am not sure if this is correct.  If so, can someone provide a "how to" for the core server.  Thank you.
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Francis Michael
Asked:
Francis Michael
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1 Solution
 
JullezNetwork EngineerCommented:
Is there enough space on the drive that hosts the VM VHD files?

Are you using dynamic or fixed disks for your VM's?
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Have a look in Hyper-V Manager for snapshots.

Either the server is loaded up because snapshots were taken, Dynamic VHDs were created with size = more than available, or a combination of both.

If a snapshot was taken then merge the differencing disks from newest to oldest and finally into the root VHD file: http://bit.ly/1n90HCD

NOTE: Storage will be required for this process and it takes _time_ to run.

Do NOT delete any differencing disks found as that will make an absolute mess.

Alternative: Use a backup to restore your VMs to fresh VHD files (have done both methods).

Philip
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Francis MichaelIT ManagerAuthor Commented:
All,
I have been working on a solution and issue is resolved.  Cause for "PAUSED" state is disk SPACE shortage.  To clear up space I exported a VM to an external drive and imported that .vhd to another server and brought that VM on-line.  It runs as required.  The remaining VMs on the original server were brought back on-line without further issues.  Suggest case closed.  Thank you Jullez and MPECSInc for ideas.
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Francis MichaelIT ManagerAuthor Commented:
Hi,
Please consider the case close and thank you for your patience.
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Hi, again, the Experts answered the initial question with the source of the problem and corrective steps to take which was posted by the OP in their response. Why would we not be awarded points for pointing out the answer to the problem please?
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Francis MichaelIT ManagerAuthor Commented:
It works
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