Param($LogFile)

if ((Get-Service -Name ClusSvc -ErrorAction SilentlyContinue).Status -ne "Running") {
  return 0
  exit
}

$ret = (Get-StorageSubsystem -FriendlyName "Cluster*"| Get-PhysicalDisk | ? {$_.HealthStatus -ne "Healthy"} | Select DeviceId, HealthStatus, Size, AllocatedSize, PhysicalLocation)
if ($ret -eq $null) {
  #Healthy
  return 0
} else {
  if($LogFile -ne $null) {
    if (Test-Path "$LogFile.old") {
      Remove-Item "$LogFile.old"
    }
    if (Test-Path "$LogFile") {
      Copy-Item $LogFile "$LogFile.old"
    }
    $ret 2>&1 | Out-File -Encoding default $LogFile
  }
  if ($ret.Count -eq $null) {
    return 1
  } else {
    return $ret.Count
  }
}