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How to Uncluster a Hyper-V Host Cluster in VMM


Applies To: System Center 2012 SP1 - Virtual Machine Manager, System Center 2012 R2 Virtual Machine Manager, System Center 2012 - Virtual Machine Manager

You can use the following procedure to uncluster a managed Hyper-V host cluster through the VMM console in Virtual Machine Manager (VMM). When you uncluster a host cluster, the nodes in the cluster become stand-alone managed hosts.

Before you begin this procedure, make sure that the following prerequisites are met.

  • The host cluster must be a managed host cluster that is located in a domain that is trusted by the domain of the VMM management server.

  • The host cluster must have no highly-available virtual machines or any other clustered services or applications.


You do not have to put the cluster nodes in maintenance mode.

To uncluster a Hyper-V host cluster

  1. Open the Fabric workspace.

  2. In the Fabric pane, expand Servers, expand All Hosts, and then locate and click the host cluster.

  3. On the Host Cluster tab, in the Host Cluster group, click Uncluster.

  4. Review the warning message, and then click Yes to continue.

  5. Open the Jobs workspace to monitor the job status.

    When the job is completed, the hosts appear as stand-alone hosts in the Fabric workspace.


    As part of the job, VMM unregisters the shared storage that is managed through VMM from the cluster nodes. If the cluster had shared storage assigned that was not managed by VMM, we recommend that you unregister the shared storage by using your storage array vendor’s management tools.

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