You can create a VM-VM DRS affinity rule within a cluster.

Prerequisites
■

Verify that you are connected to a vCenter Server system.

■

Verify that virtual machines and hosts exist within a cluster with enabled DRS in the vCenter Server environment.

Procedure
1

Get the virtual machines for the VM-VM DRS rule. 

$affinityVMs = Get-VM "VM1", "VM2"
2

Get the cluster where you want to create the rule. 

$cluster = Get-Cluster "MyCluster"
3

Create the VM-VM DRS rule within the MyCluster cluster. 

New-DrsRule -Cluster $cluster -Name "AffinityRule1" -KeepTogether $true -VM $affinityVMs