VMware vSphere Autodeployment (virtuallyGhetto)

Did I already mention that I am a huge fan of the Autodeploy Script from William Lam? William created a bunch of script which help you to deploy a nested VMware environment in an automated way. The environment itself is built with a VSAN based datastore.

You can find the Blog Post from William here:

vGhetto Automated vSphere Lab Deployment for vSphere 6.0u2 & vSphere 6.5


and his GIT repository with the scripts here:


When you look at the Blog Post from William you can see that he uses a single ESX Hosts for his deployment. In case that you maybe have more ESX host there is a small issue in case that you have a VSAN based cluster. For the deployment of a nested VSAN environment on a VSAN bases Cluster you must set a VSAN Parameter (not recommended for production usage!). William makes these settings only for one host as you can see in this script

if($datastore.Type -eq "vsan") {
My-Logger "VSAN Datastore detected, enabling Fake SCSI Reservations ..."
Get-AdvancedSetting -Entity $vmhost -Name "VSAN.FakeSCSIReservations" | Set-AdvancedSetting -Value 1 -Confirm:$false | Out-File -Append -LiteralPath $verboseLogFile


In my environment a have a four node cluster hosts with HA and DRS configured. In some cases, DRS kicks-in during the enrollment of the nested environment. When a virtual ESX Hosts ends up on a Hosts were the settings was node made, the deployment fails.

In my case I made an improvement (for my usage) to the script where I configure the Fake SCSI settings for all Hosts of a cluster.


if($datastore.Type -eq "vsan") {
$FakeVSANhosts = $cluster | Get-VMHost | ForEach-Object {
My-Logger "VSAN Datastore detected, enabling Fake SCSI Reservations for Host $_ ..."
Get-AdvancedSetting -Entity $_ -Name "VSAN.FakeSCSIReservations" | Set-AdvancedSetting -Value 1 -Confirm:$false | Out-File -Append -LiteralPath $verboseLogFile


So, if someone of you runs into the same problem, just change the lines in the script from William and everything should work like expected.