A VSDM "Template" is a Virtual Machine Hard Disk image that is used as a master image. Like the image that generates a CD that will be applied to a blank media, a virtual template works in an analogous way.
Once the user creates an image based on the template, they will have a "clone" (yet not expensive) replica of the original template that he can change without affecting the original image.
The system works in steps:
For example, the following steps are common scenarios for use with the tool:
From now on, the system contains 2 templates, and any user can quickly get a "Server 2003 RTM" or "Server 2003 SP1" machine to work right away. But notice that the administrator interaction is very quickly and limited, freeing this usually expensive resource to take care of more critical tasks.