#The source Hyper-V host
$SourceNode = 'NODE-A'
#The LUN where you want to storage migrate your VMs away from
$SourceRootPath = "C:\ClusterStorage\Volume1*"
#The source Hyper-V host

#The target Hypr-V host
$TargetNode = 'ZULU'
#The storage pathe where you want to storage migrate your VMs to
$TargetRootPath = "C:\ClusterStorage\Volume1"

$OldVirtualSwitch01 = 'vSwitch-VLAN500'
$OldVirtualSwitch02 = 'vSwitch-VLAN600'
$NewVirtualSwitch = 'ConvergedVirtualSwitch'
$VlanId01 = 500
$VlanId02 = 600
  
if ((Get-VMSwitch -name $OldVirtualSwitch01 ).BandwidthReservationMode -eq 'Absolute') { 
    $OldVirtualSwitch01QoSMode = 'Absolute'
}
if ((Get-VMSwitch -name $OldVirtualSwitch01 ).BandwidthReservationMode -eq 'Absolute') { 
    $OldVirtualSwitch02QoSMode = 'Absolute'
}
    
#Grab all the VM we find that have virtual disks on the source CSV - WARNING for W2K12 you'll need to loop through all cluster nodes.
$AllVMsOnRootPath = Get-VM -ComputerName $SourceNode | where-object { $_.HardDrives.Path -like $SourceRootPath }

#We loop through all VMs we find on our SourceRoootPath
ForEach ($VM in $AllVMsOnRootPath) {
    #We generate the final VM destination path
    $TargetVMPath = $TargetRootPath + "\" + ($VM.Name).ToUpper()
    #Grab the VM name
    $VMName = $VM.Name
    $VM.VMid
    $VMName

    #If the VM is still clusterd, get it removed form the cluster as live shared nothing migration will otherwise fail.
    if ($VM.isclustered -eq $True) {
        write-Host -ForegroundColor Magenta $VM.Name "is clustered and is being removed from cluster"
        Remove-ClusterGroup -VMId $VM.VMid -Force -RemoveResources
        Do { Start-Sleep -seconds 1 } While ($VM.isclustered -eq $True)
        write-Host -ForegroundColor Yellow $VM.Name "has been removed from cluster"
    }
    #If the VM checkpoint, notify the user of the script as this will cause issues after swicthing to the new virtual
    #switch on the target node. Live migration will fail between cluster nodes if the checkpoints references 1 or more
    #non existing virtual switches. These must be removed prior to of after completing the shared nothing migration.
    #The script does this after the migration automatically, not before as I want it to be untouched if the shared nothing
    #migration fails.

    $checkpoints = get-vmcheckpoint -VMName $VM.Name

    if ($Null -ne $checkpoints) {
        write-host -foregroundcolor yellow "This VM has checkpoints"
        write-host -foregroundcolor yellow "This VM will be migrated to the new host"
        write-host -foregroundcolor yellow "Only after a succesfull migration will ALL the checpoints be removed"
    }
    
    #Do the actual storage migration of the VM, $DestinationVMPath creates the default subfolder structure
    #for the virtual machine config, snapshots, smartpaging & virtual hard disk files.
    Move-VM -Name $VMName -ComputerName $VM.ComputerName -IncludeStorage -DestinationStoragePath $TargetVMPath -DestinationHost $TargetNode
    
    $MovedVM = Get-VM -ComputerName $TargetNode -Name $VMName

    $vNICOnOldvSwitch01 = Get-VMNetworkAdapter -ComputerName $TargetNode -VMName $MovedVM.VMName | where-object SwitchName -eq $OldVirtualSwitch01
    if ($Null -ne $vNICOnOldvSwitch01) {
        foreach ($VMNetworkadapater in $vNICOnOldvSwitch01) {   
            if ($OldVirtualSwitch01QoSMode -eq 'Absolute') { 
                if (0 -ne $VMNetworkAdapter.bandwidthsetting.Maximumbandwidth) {
                    write-host -foregroundcolor cyan "Network adapter $VMNetworkAdapter.Name of VM $VMName MaximumBandwidth will be reset to 0."
                    Set-VMNetworkAdapter -Name $VMNetworkAdapter.Name -VMName $MovedVM.Name -ComputerName $TargetNode -MaximumBandwidth 0
                }
                if (0 -ne $VMNetworkAdapter.bandwidthsetting.MinimumBandwidthAbsolute) {
                    write-host -foregroundcolor cyan "Network adapter $VMNetworkAdapter.Name of VM $VMName MaximuBandwidthAbsolute will be reset to 0."
                    Set-VMNetworkAdapter -Name $VMNetworkAdapter.Name -VMName $MovedVM.Name -ComputerName $TargetNode -MinimumBandwidthAbsolute 0
                }
            }
                
            write-host 'Moving to correct vSwitch'
            Connect-VMNetworkAdapter -VMNetworkAdapter $vNICOnOldvSwitch01 -SwitchName $NewVirtualSwitch
            write-host "Setting VLAN $VlanId01"
            Set-VMNetworkAdapterVlan  -VMNetworkAdapter $vNICOnOldvSwitch01 -Access -VLANid $VlanId01
        }
    }

    $vNICsOnOldvSwitch02 = Get-VMNetworkAdapter -ComputerName $TargetNode -VMName $MovedVM.VMName | where-object SwitchName -eq $OldVirtualSwitch02
    if ($NULL -ne $vNICsOnOldvSwitch02) {
        foreach ($VMNetworkadapater in $vNICsOnOldvSwitch02) {
            if ($OldVirtualSwitch02QoSMode -eq 'Absolute') { 
                if ($Null -ne $VMNetworkAdapter.bandwidthsetting.Maximumbandwidth) {
                    write-host -foregroundcolor cyan "Network adapter $VMNetworkAdapter.Name of VM $VMName MaximumBandwidth will be reset to 0."
                    Set-VMNetworkAdapter -Name $VMNetworkAdapter.Name -VMName $MovedVM.Name -ComputerName $TargetNode -MaximumBandwidth 0
                }
                if ($Null -ne $VMNetworkAdapter.bandwidthsetting.MinimumBandwidthAbsolute) {
                    write-host -foregroundcolor cyan "Network adapter $VMNetworkAdapter.Name of VM $VMName MaximumBandwidth will be reset to 0."
                    Set-VMNetworkAdapter -Name $VMNetworkAdapter.Name -VMName $MovedVM.Name -ComputerName $TargetNode -MinimumBandwidthAbsolute 0
                }
            }
            write-host 'Moving to correct vSwitch'
            Connect-VMNetworkAdapter -VMNetworkAdapter $vNICsOnOldvSwitch02 -SwitchName $NewVirtualSwitch
            write-host "Setting VLAN $VlanId02"
            Set-VMNetworkAdapterVlan  -VMNetworkAdapter $vNICsOnOldvSwitch02 -Access -VLANid $VlanId02
        }
    }

    #If the VM has checkpoints, this is when we remove them.
    $checkpoints = get-vmcheckpoint -ComputerName $TargetNode -VMName $MovedVM.VMName

    if ($Null -ne $checkpoints) {
        write-host -foregroundcolor yellow "This VM has checkpoints and they will ALL be removed"
        $CheckPoints | Remove-VMCheckpoint 
    }
}