Maintenance tip for XenServer Hosting XenDesktop

Need to apply a patch or Driver update on a production Xenserver that needs a reboot?
Steps

1. Using workload balancing appliance; exclude the host for placement
2. Run the following script on the XenDesktop controller which shuts down the machines that are on Ready state
   [sourcecode language=”powershell” wraplines=”true” collapse=”false”]
   #Maintenance XenServer XDXS07
   Get-BrokerDesktop -HostingServerName XDXS07 | % {
   if($_.SummaryState -eq "Available") {New-BrokerHostingPowerAction -Action ‘Shutdown’ -MachineName $_.MachineName}
   }
   [/sourcecode]
3. XenMotion the rest of the machines in disconnected or InUse state to other hosts