I recently needed to do a multi-tenancy installation of SharePoint 2010 for a customer. I was very impressed by the AutoSPInstaller scripts to do a full install of SharePoint, so I figured: I want to use this!

So I modified the script to handle multi-tenancy installations as well. This was actually not that complicated. I altered the Service-Applications to have an additional attribute “PartitionMode”, which can be true or false. This will trigger the corresponding PowerShell switch for creating the Service-Application.

When doing a multi-tenancy installation I also modified the installation of the root web-application for the hosting as described by Spence Harbar in his Rational Guide to Multi Tenancy.

I also added new Configuration-Elements to setup tenants (aka Subscriptions).

This code was originally based on the 2.5.5 version and was recently re-based to 2.5.7.

The patch can be found on the CodePlex project site.