Script to extract disk space usage through WMI

This script can be used to extract information regarding sapce usage (actually free disk space in percent) from one or more servers or cluster. Since the script uses Win32_Volume, it can also recognize mountpoints.

$outData = @("")
$server = $args[0]
$dataFromServer = Get-WmiObject Win32_Volume -ComputerName $server | Select-Object SystemName,Label,Name,DriveLetter,DriveType,Capacity,Freespace

foreach ($currline in $dataFromServer) {
    if ((-not $currline.name.StartsWith("\\")) -and ($currline.Drivetype -ne 5)) {
        [float]$tempfloat = ($currline.Freespace / 1000000) / ($currline.Capacity / 1000000)
        $temppercent = [math]::round(($tempfloat * 100),2)
        add-member -InputObject $currline -MemberType NoteProperty -name FreePercent -value "$temppercent %"
        $outData = $outData + $currline
    }
}

$outData | Select-Object SystemName,Label,Name,Capacity,FreePercent | sort-object -property FreePercent | format-table -autosize