<#
  License Vaidator Script for vSphere 5 vRAM 
  Copyright Ryan McLean 2011
  ryan1 underscore 00 _at_ hotmail dot com
  
  Version: 0.1
#>
$objs = @()

$servInst = Get-View ServiceInstance
$licMgr = Get-View $servInst.Content.licenseManager
$licAssignMgr = Get-View $licMgr.licenseAssignmentManager

$totalVRAMEntitlement = 0
$totalVRAMUsed = 0


Get-View -ViewType HostSystem | Sort Name | `
ForEach-Object {
	$sys = "" | `
	Select-Object Name, CPUType, PhysicalCPUs, CoresPerCPU, TotalCores, `
		ThreadsPerCore, TotalThreads, LicenseType, vRAMEntitalment, `
		vRAMUsedPoweredOnOnly, TotalvRAMUsed, Compliant, OverAllocated
	$sys.Name = $_.Name
	$sys.CPUType = $_.Hardware.CpuPkg[0].Description
	$sys.PhysicalCPUs = $_.Hardware.CpuInfo.NumCpuPackages
	$sys.CoresPerCPU = `
		($_.Hardware.CpuInfo.NumCpuCores/$_.Hardware.CpuInfo.NumCpuPackages)
	$sys.TotalCores = $_.Hardware.CpuInfo.NumCpuCores
	$sys.ThreadsPerCore = `
		($_.Hardware.CpuInfo.NumCpuThreads/$_.Hardware.CpuInfo.NumCpuCores)
	$sys.TotalThreads = $_.Hardware.CpuInfo.NumCpuThreads
	
	$license = $licAssignMgr.QueryAssignedLicenses($_.Config.Host.Value)
	$license = $license.GetValue(0)
	$sys.LicenseType = $license.AssignedLicense.Name
	
	if ($sys.LicenseType -like "*Enterprise Plus") {
		$sys.vRAMEntitalment = ($sys.PhysicalCPUs*48)
	} elseif ($sys.LicenseType -like "*Enterprise") {
		$sys.vRAMEntitalment = ($sys.PhysicalCPUs*32)
	} elseif ($sys.LicenseType -like "*Standard") {
		$sys.vRAMEntitalment = ($sys.PhysicalCPUs*24)
	} elseif ($sys.LicenseType -like "*Essentials Plus Kit") {
		$sys.vRAMEntitalment = ($sys.PhysicalCPUs*24)
	} elseif ($sys.LicenseType -like "*Essentials Kit") {
		$sys.vRAMEntitalment = ($sys.PhysicalCPUs*24)
	}
	
	Get-VM -Location $sys.Name | `
	ForEach-Object {
		if ($_.powerstate -eq "PoweredOn") {
			$sys.vRAMUsedPoweredOnOnly += ($_.MemoryMB/1024)
		}
		$sys.TotalvRAMUsed += ($_.MemoryMB/1024)
	}
	$sys.vRAMUsedPoweredOnOnly = "{0:N2}" -f $sys.vRAMUsedPoweredOnOnly
	$sys.TotalvRAMUsed = "{0:N2}" -f $sys.TotalvRAMUsed
	
	
	if ($sys.vRAMEntitalment -ge $sys.vRAMUsedPoweredOnOnly) {
		$sys.Compliant = $true
	} else {
		$sys.Compliant = $false
	}
	
	if ($sys.vRAMEntitalment -lt $sys.TotalvRAMUsed) {
		$sys.OverAllocated = $true
	} else {
		$sys.OverAllocated = $false
	}
	
	$totalVRAMEntitlement += $sys.vRAMEntitalment
	$totalVRAMUsed += $sys.TotalvRAMUsed
	$objs += $sys
}

$objs
if ($totalVRAMEntitlement -ge $totalVRAMUsed) {
	Write-Host "Overall Compliant"
} else {
	Write-Host "Overall Non-Compliant"
}