Get Diskspace for an AD Group and Call Out Nonresponsive

PollDiskspace.ps1

$Targets = Get-ADComputer -Filter '*' -SearchBase (Get-ADOrganizationalUnit -filter {Name -like "*GroupNameHere*"} |select -expand DistinguishedName) | Select -ExpandProperty Name
$Results = Get-WmiObject win32_logicaldisk -ComputerName $Targets
$UniqueResults = $Results | select -ExpandProperty __SERVER -Unique
$NonResponsive = $Targets |?{$_ -notin $UniqueResults}