This article discusses using virtualization as a simple and low-risk backup method for migrating Windows SBS. A virtualized migration can be done in four stages.
In Stage 2, you go through the normal migration process migrating the virtualized SBS and leaving the physical SBS untouched.
In Stage 3, after reaching the point where your SBS2003 is nearly complete, you can repurpose your physical SBS2003 server for line of business (LOB) applications or
for other purposes. Repurposing the physical SBS2003 server involves reformatting the system partition on the physical server. Because you created a backup of the pre-migrated SBS2003 in Stage 1, you will be able to load this image as a virtual machine any
time you need to access the pre-migration SBS2003 server.
In Stage 4, you complete the migration. SBS2008 is running on a new server, LOB applications are running on the old server, and the virtual host server is freed up and ready for a new