PowerShell: Discover Domain Controllers and Classify Each As VM or Physical

Current Version

$dcObjects=Get-ADDomainController -Filter * | select Name,OperationMasterRoles
foreach ($dc in $dcObjects){
	$dcName=$dc.Name
	$dcRole=$dc.OperationMasterRoles
  try{
    $machineModel=(Get-WmiObject -Class Win32_ComputerSystem -ComputerName $dcName -ea stop).Model
  }
  catch{
    $machineModel="Unknown";
    $machineType="Unknown";
    Continue;
  }
  finally{
	switch -wildcard ($machineModel){
		"*Virtual*" {$machineType="Virtual Machine";}
		"*HVM*" {$machineType="Virtual Machine";}
		"Unknown" {$machineType="Physical Machine";}
		}
    if ([string]::IsNullOrEmpty($dcRole)){$dcRole="None"}
    "$dcName`: $machineType - Roles: $dcRole"
  }
}

Output:

AD02: Physical Machine - Roles: None
AD01: Physical Machine - Roles: None
AD03: Physical Machine - Roles: SchemaMaster DomainNamingMaster PDCEmulator RIDMaster InfrastructureMaster

Old Version:

# Adding Prerequisite Active Directory Module
if (!(get-module -name "ActiveDirectory") ){
    Add-WindowsFeature RSAT-AD-PowerShell | out-null;
    import-module -name "ActiveDirectory" -DisableNameChecking | out-null;
    }
    
$allDcs=Get-ADDomainController -Filter * | Select Name
foreach ($dc in $allDcs){
	$dcName=$dc.Name
	$machineType=(Get-WmiObject -Class Win32_ComputerSystem -ComputerName $dcName -ErrorAction Continue).Model
	if($machineType -like "Virtual Machine"){
		"$dcName`: $machineType"
		}else{
		"$dcName`: Physical Machine"
		}
	# netsh advfirewall firewall set rule group="Windows Management Instrumentation (WMI)" new enable=yes
}

Output:

DC01: Virtual Machine
DC02: Physical Machine