PowerCLI: Check Partition Alignment (Windows VMs Only)


Some time ago I  already created a script to report the disk alignment status of your Windows VM’s. I updated the script so you are able to export it to a CSV or XML file.

$myCol = @()
$vms = get-vm | where {$_.PowerState -eq "PoweredOn" -and `
$_.Guest.OSFullName -match "Microsoft Windows*" } | Sort Name 

foreach($vm in $vms){
$wmi = get-wmiobject -class "Win32_DiskPartition" `
-namespace "root\CIMV2" -ComputerName $vm            

    foreach ($objItem in $wmi){
        $Details = "" | Select-Object VMName, Partition, Status        
            if ($objItem.StartingOffset -eq "65536"){
                $Details.VMName = $objItem.SystemName
                   $Details.Partition = $objItem.Name
                $Details.Status = "Partition aligned"
                $Details.VMName = $objItem.SystemName
                   $Details.Partition = $objItem.Name
                $Details.Status = "Partition NOT aligned"                    
    $myCol += $Details
$myCol | Export-Csv -NoTypeInformation "C:\Temp\PartitionAlignment.csv"
#$myCol | Export-Clixml "C:\Temp\PartitionAlignment.xml"

The script uses WMI to gather the information about the partition of the Windows VM. So if you’re using a Firewall, be sure to open the right ports. More info about WMI and Firewalls, can be found over here: http://msdn.microsoft.com/en-us/library/aa822854%28VS.85%29.aspx

The output will look like this:


Powershell: Export Installed Software to Excel


I created the next script to inventory the installed software on my servers. The only thing you need to create is a text file with all your servers in it and save it to Servers.txt.

#Create a new Excel object using COM
$Excel = New-Object -ComObject Excel.Application
$Excel.visible = $True
$Excel.SheetsInNewWorkbook = @(get-content "C:\Scripts\PS\Servers.txt").count

#Counter variable for rows
$i = 1

#Read thru the contents of the Servers.txt file
foreach ($server in get-content "C:\Scripts\PS\Servers.txt")
    $Excel = $Excel.Workbooks.Add()
    $Sheet = $Excel.Worksheets.Item($i++)
    $Sheet.Name = $server

    $intRow = 1

    # Send a ping to verify if the Server is online or not.
    $ping = Get-WmiObject `
    -query "SELECT * FROM Win32_PingStatus WHERE Address = '$server'"
       if ($Ping.StatusCode -eq 0) {

         #Create column headers
         $Sheet.Cells.Item($intRow,1) = "NAME:"
         $Sheet.Cells.Item($intRow,2) = $server.ToUpper()
         $Sheet.Cells.Item($intRow,1).Font.Bold = $True
         $Sheet.Cells.Item($intRow,2).Font.Bold = $True


         $Sheet.Cells.Item($intRow,1) = "APPLICATION"
         $Sheet.Cells.Item($intRow,2) = "VERSION"

             #Format the column headers
             for ($col = 1; $col –le 2; $col++)
                  $Sheet.Cells.Item($intRow,$col).Font.Bold = $True
                  $Sheet.Cells.Item($intRow,$col).Interior.ColorIndex = 48
                  $Sheet.Cells.Item($intRow,$col).Font.ColorIndex = 34


             $software = Get-WmiObject `
             -ComputerName $server -Class Win32_Product | Sort-Object Name 

             #Formatting using Excel

             foreach ($objItem in $software){
                $Sheet.Cells.Item($intRow, 1) = $objItem.Name
                $Sheet.Cells.Item($intRow, 2) = $objItem.Version

                   $intRow ++



The following Excel file will be created. For each server in Servers.txt, there will be added a worksheet with the name of the server.


Powershell: Remove a Folder from every Home Directory


I had to remove a folder from every home directory. So I thought this is a nice thing to do with Powershell.

So I created the Remove-Folder function to do this for me :-).

The function will go through the following steps:

The begin part will browse to all the folders within the E:\users and export the full path to a CSV file. The path will look like this: E:\users\username\test\foldername.

In the process part it will remove all the folders which are saved in the CSV file.

Warning: The folders will be removed without a warning. So be sure you want to do this!!

function Remove-Folder{

        Get-Childitem $path -Recurse `
        | Where-Object { $_.Name -eq $folder } `
        | Select FullName `
        | Export-Csv -NoTypeInformation "$env:temp\remove.csv"
        $import = Import-Csv "$env:temp\remove.csv"
        foreach($folder in $import){
            Remove-Item $folder.FullName -Recurse -Force
    Remove-Item "$env:temp\remove.csv"

You can use the function with the following command:

Remove-Folder E:\users foldername

Via the following one-liner, you can validate the removal job:

Get-Childitem E:\users -Recurse `
| Where-Object { $_.Name -eq "foldername" } `
| Select FullName `
| Export-Csv -NoTypeInformation "$env:temp\remove.csv" 

Open the remove.csv file to verify the changes.

Powershell: Delete a Folder of a Particular Age


I created this script to delete a folder which is older than two days. I needed this for a simple backup solution. I have a Powershell script that will backup a VM which runs in VMware Workstation. This script runs everyday and creates a folder with a date stamp. After a couple weeks there where a lot of copies of the particular VM and the free space of the backup hard disk became very low.

This script will remove all folders in the D:\vmbackup folder which are older then 2 days.

$Now = Get-Date
$Days = "2"
$TargetFolder = "D:\vmbackup"
$LastWrite = $Now.AddDays(-$Days)

$Folders = get-childitem -path $TargetFolder | 
Where {$_.psIsContainer -eq $true} | 
Where {$_.LastWriteTime -le "$LastWrite"} 

    foreach ($Folder in $Folders)
    write-host "Deleting $Folder" -foregroundcolor "Red"
    Remove-Item $Folder -recurse -Confirm:$false

Found New Hardware Wizard Loop


After upgrading one of my VM’s to vSphere (Hardware / VMware Tools). I get the following wizard over and over again.


After a search on google I found out that there are two topics on the VMware communities:

I found the following “Solution”:

I have this problem too. If you check Device Manager, you’ll probably see what I see – 32 PCI-to-PCI bridges! Sadly, there’s apparently no way to prevent Windows from showing the New Hardware Wizard if the already-installed driver is unsigned (which the Fusion beta drivers are). So just go through it 32 times.

It’s true, after installing over and over again, the wizard stops popping up :-D. The weird thing is that this “bug” only appears on one of my VM’s. So I hope it will never popup again.

Powershell: Get-SubFolderSize


On every home directory will be a  folder called Files. I was curious how big these folders are. So this is why I created the following Powershell script:

function Get-Foldersize{
  $Dirs = Get-ChildItem -path $StartFolder\* -Recurse -Include $SubFolder 
  foreach($Dir in $Dirs){
  $objFSO = New-Object -com  Scripting.FileSystemObject
  "$Dir = " + "{0:N2}" -f (($objFSO.GetFolder("$Dir").Size) / 1MB) + " MB" 

Get-FolderSize C:\Users Files


The output of the script will look like this:


Here are some pictures (as hard evidence 😉 ) of the folder properties:


Source: http://www.microsoft.com/technet/scriptcenter/

Windows: Terminal Server and connected Terminal Services clients pause when a Terminal Services client logs on or logs off

De laatste weken ben ik samen met Aleks Nikolić van Virtualistic.nl bezig met het troubleshooten van verschilende TS problemen. Tijdens de zoektocht naar mogelijke oplossingen kwamen uit op KB324446.

In KB324446 wordt het volgende geschreven:

When a Terminal Services client logs on or logs off (either in a session or on the console of the Terminal server), the Microsoft Windows Server 2003-based or the Microsoft Windows 2000-based Terminal server together with the connected Terminal Services client computers may stop responding or may pause for several seconds. Users may also experience one or more of the follow symptoms:

  • When a user types in a document, characters do not appear on the screen until this pause has ended.
  • Keyboard input and mouse input are queued, but they are not processed until this pause has ended.
  • Live performance monitoring (Perfmon) graphs have missing data points during this pause.
  • All running programs appear to stop responding, or “hang,” during this pause.
  • When Spooler is under a load from a large number of users, a high CPU usage is displayed for it.

Als je een Terminal server hebt met twee voedingen (wat wel gebruikelijk is volgens mij) dan moet je zeker de volgende change doorvoeren: Deze optie moet je alleen instellen als je raidcontroller een battery-backup cache module heeft (thanks Sven).

Zet het vinkje aan bij “Enable advanced performance”


Nadat de bovenstaande settings zijn doorgevoerd, moeten er ook nog een aantal registry keys aangepast worden. Namelijk de volgende:

Note This section applies to both Windows Server 2003 and to Windows 2000.

  • In the HKLM\SYSTEM\CurrentControlSet\Services\Lanmanserver\Parameters subkey,
  • configure the following entries:
    • Name: MaxWorkItems
      Data Type: REG_DWORD
      Value data: 8192 (decimal)
    • Name: MaxMpxCt
      Data Type: REG_DWORD
      Value data: 2048 (decimal)
    • Name: MaxRawWorkItems
      Data Type: REG_DWORD
      Value data: 512 (decimal)
    • Name: MaxFreeConnections
      Data Type: REG_DWORD
      Value data: 100 (decimal)
    • Name: MinFreeConnections
      Data Type: REG_DWORD
      Value data: 32 (decimal)
  • In the HKLM\SYSTEM\CurrentControlSet\Services\Lanmanworkstation\Parameters subkey, configure the following entry:
    • Name: MaxCmds
      Data Type: REG_DWORD
      Value data: 2048 (decimal)
  • By default, your registry does not have a Configuration Manager subkey. To create the key, locate and then right-click the following subkey:HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session ManagerPoint to New, and then click Key. Type Configuration Manager, and then press ENTER.
    In the new HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Configuration Manager subkey, configure the following entry:
  • Name: RegistryLazyFlushInterval
    Data Type: REG_DWORD
    Value data: 60 (decimal)

Ik heb deze registry keys even uitgewerkt in de volgende twee files:


Windows Registry Editor Version 5.00[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters]


Windows Registry Editor Version 5.00[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Configuration Manager]
“RegistryLazyFlushInterval “=dword:0000003c

Nadat je alle changes hebt doorgevoerd, moet je de server opnieuw op starten.