Before you can create a VM-Host affinity rule, you must create the host DRS group and the virtual machine DRS group that the rule applies to.

For a cluster of virtual machines on one physical host, create one virtual machine DRS group that contains all MSCS virtual machines. For example, VMGroup_1 contains MSCS_VM_1 and MSCS_VM_2.

For a cluster of virtual machines across physical hosts, create one virtual machines DRS group for each MSCS virtual machine. For example, VMGroup_1 contains MSCS_VM_1 and VMGroup_2 contains MSCS_VM_2.

1

Browse to the cluster in the vSphere Web Client navigator.

2

Click the Manage tab.

3

Click Settings, click DRS Groups and click Add.

4

In the DRS Group dialog box, type a name for the group.

5

Select VM DRS Group from the Type drop down box and click Add.

6

Click the check box next to a virtual machine to add it. Continue this process until all desired virtual machines have been added.

For a cluster of virtual machines on one physical host, add all MSCS virtual machines to one group.

For a cluster of virtual machines across physical hosts, add one MSCS virtual machine per group.

7

Click OK.