windows disk space utilization with Powershell script

 

To get windows disk space utilization for single server.

The script calculates the disk utilization, free space, and percent free for each disk on each server

$disks = Get-WmiObject Win32_LogicalDisk -Filter "DriveType=3"

foreach ($disk in $disks) {

    $diskName = $disk.DeviceID

    $diskSize = $disk.Size / 1GB

    $diskFree = $disk.FreeSpace / 1GB

    $diskUsed = $diskSize - $diskFree

    $diskUtilization = $diskUsed / $diskSize * 100

    $diskPercentFree = $diskFree / $diskSize * 100

    $diskFreeFormatted = "{0:N2}GB" -f $diskFree

    $diskSizeFormatted = "{0:N2}GB" -f $diskSize

    Write-Host ("Disk {0}: Utilization = {1:N2}%, Free = {2} ({3:N2}%), Size = {4}" -f $diskName, $diskUtilization, $diskFreeFormatted, $diskPercentFree, $diskSizeFormatted)

}

For Multiple servers

$servers = "server1", "server2", "server3"

foreach ($server in $servers) {

    Write-Host "Server: $server"

    $disks = Get-WmiObject Win32_LogicalDisk -Filter "DriveType=3" -ComputerName $server

    foreach ($disk in $disks) {

        $diskName = $disk.DeviceID

        $diskSize = $disk.Size / 1GB

        $diskFree = $disk.FreeSpace / 1GB

        $diskUsed = $diskSize - $diskFree

        $diskUtilization = $diskUsed / $diskSize * 100

        $diskPercentFree = $diskFree / $diskSize * 100

        $diskFreeFormatted = "{0:N2}GB" -f $diskFree

        $diskSizeFormatted = "{0:N2}GB" -f $diskSize

        Write-Host ("Disk {0}: Utilization = {1:N2}%, Free = {2} ({3:N2}%), Size = {4}" -f $diskName, $diskUtilization, $diskFreeFormatted, $diskPercentFree, $diskSizeFormatted)

    }

}