http://blogs.technet.com/b/apb/archive/2009/03/20/the-purpose-of-scvmm-network-location-and-tag.aspxThe ‘preferred location’ and ‘preferred tag’ configured under a Virtual Netowrk Adapter in a VM, template or harware profile, are used during placement to choose hosts with the desired connection requirements and during deployment to choose the Virtualen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)