Changed configuration of numerous VMware clusters to utilize multi-NIC vMotion. As with all my PS, it’s quick & dirty and cobbled from a couple of example scripts. Assumes existing vmkernel port group named “vMotion”

<#
.SYNOPSIS
   Configure multi-NIC vMotion
.DESCRIPTION
   Miklm.com 08/19/2015
   Credit to examples from http://www.yellow-bricks.com/2011/09/17/multiple-nic-vmotion-in-vsphere-5/#comment-28153 & http://hostilecoding.blogspot.com/2014/01/vmware-virtual-standard-switch.html
#>

$viserver = "vCenter.local"
$cluster = "CLUSTERNAME"
$vswitchName = "vSwitch1"
$VMotionVLan = "908"
$vSwitch2Nics = "vmnic1","vmnic3"
$VMotionPortGroupName1 = "vMotion-01"
$VMotionPortGroupName2 = "vMotion-02"

Connect-VIServer $viserver

Foreach ($esxhost in (Get-Cluster -name $cluster | Get-VMHost))
{
  $vswitch = Get-VirtualSwitch -VMHost $esxhost -Name $vswitchName

  # Remove the original "vMotion" VMkernel Port group
  Remove-VMHostNetworkAdapter -Nic (Get-VMHostNetworkAdapter -VMHost $esxhost | where {$_.PortGroupName -eq "vMotion"}) -Confirm:$false
  Remove-VirtualPortGroup -VirtualPortGroup (Get-VirtualPortGroup -Name "vMotion" -vmhost $esxhost) -Confirm:$false

  # Configure virtual switch for Multi-NIC vMotion
  $vportgroup1 = New-VirtualPortGroup -VirtualSwitch $vswitch -Name $VMotionPortGroupName1 -VLanId $VMotionVLan
  $vportgroup2 = New-VirtualPortGroup -VirtualSwitch $vswitch -Name $VMotionPortGroupName2 -VLanId $VMotionVLan

  $vNic1 = New-VMHostNetworkAdapter -VMHost $esxhost -VirtualSwitch $vswitch -PortGroup $vportgroup1 -VMotionEnabled:$true
  $vNic2 = New-VMHostNetworkAdapter -VMHost $esxhost -VirtualSwitch $vswitch -PortGroup $vportgroup2 -VMotionEnabled:$true

  $vportgroup1 | Get-NicTeamingPolicy | Set-NicTeamingPolicy -MakeNicActive $vSwitch2Nics[0] -MakeNicStandBy $vSwitch2Nics[1]
  $vportgroup2 | Get-NicTeamingPolicy | Set-NicTeamingPolicy -MakeNicActive $vSwitch2Nics[1] -MakeNicStandBy $vSwitch2Nics[0]
}