Hyper-V Cluster balancing

<#
RT 18APR2018
#>

[string]$clusterName
[string]$vmHosts
[string]$vmHost
[string]$clusterHosts
[int]$nodeCount = 0
[string]$allVMs
[string]$vm
[int]$totalAssignedVMMemory = 0
[int]$bytesToGB = 0
[int]$preferredHostMemory = 0
[string]$hostVMs
[string]$hostVM
[int]$totalVMMemory = 0
[int]$counter = 1

$bytestoGB = 1073741824

Clear-Host

$clusterName = Read-Host "Please enter a cluster to balance"

$vmHosts = Get-ClusterNode -Cluster $clusterName | Get-VMHost
$clusterHosts = Get-ClusterNode -Cluster $clusterName
$nodeCount = $clusterHosts.Count

$allVMs = Get-ClusterResource -Cluster $clusterName | Where-Object {$_.ResourceType -eq 'Virtual Machine'} | Get-VM

ForEach($vm in $allVMs)
{
	$totalAssignedVMMemory = $totalAssignedVMMemory + ($vm.MemoryAssigned/$bytesToGB)

}

$preferredHostMemory = $totalAssignedVMMemory/$nodeCount

ForEach($vmHost in $vmHosts)
{
	$totalVMMemory = 0

	$hostVMs = Get-VM -ComputerName $vmHost.Name

	ForEach($hostVM in $hostVMs)
	{
		$totalVMMemory = $totalVMMemory + ($vm.MemoryAssigned/$bytesToGB)

		If($totalVMMemory -gt ($preferredHostMemory+10))
		{
			$preferredHostMemory+20
			Move-ClusterVirtualMachineRole -Name $hostVM.Name -Node $vmHosts[$counter].Name
		}
	}

	$counter++

	If($counter -eq $nodeCount)
	{
		$counter = 0
	}
Write-Host `n
}