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Ensuring virtual machines stay on a specific ESX/ESXi host (1005508)

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Purpose

This article provides steps to ensure that virtual machines stay on specific ESX hosts.

Resolution

If you want a Virtual Machine(s) to only run on a particular ESX/ESXi host, you must create affinity rules to prevent DRS from auto-migrating the virtual machines to other ESX hosts

To create an affinity Rule in vCenter, see the below steps:

  1. Right click the Cluster > Edit Settings.
  2. Enable DRS, if it is not already enabled.
  3. Click Rules > Add.
  4. Click the DRS Groups Manager tab. 
  5. Click Add under Host DRS Groups to create a new Host DRS Group containing the hosts in the cluster that you want to tie the VMs to. 
  6. Click Add under Virtual Machine DRS Groups to create a Virtual Machine DRS Group for all of the virtual machines that you want to tie to hosts listed in the Host group created above
  7. Click the Rule tab, give the new rule a name and from the Type drop-down menu, click Virtual Machines to Hosts.
  8. Under Cluster Vm Group select the newly created VM group.
  9. Select Must run on hosts in group
  10. Under Cluster Host Group select the newly created Cluster Host Group and click OK.

For further details on affinity rules, see the vSphere Resource Management Guide.

Additional Information

See Also

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