Selecting from multiple MDT deployment shares
If you have multiple deployment shares set up on your network using MDT 2010, is it possible to choose which one to use from the target computer at the beginning of a deployment?
Yes. Simply remove the DeployRoot line from the bootstrap.ini file of each of your deployment shares, and then update your deployment shares to regenerate the boot images. Now, when a target computer is started from a boot image, a dialog will be displayed asking you to type the UNC path to the deployment share you want to use. Alternatively, you can manually create a LocationServer.xml file that MDT can use to display a drop-down list of deployment shares on the target computer. For more information on LocationServer.xml file, see the topic titled "Selecting a Local Microsoft Deployment Toolkit Server When Multiple Servers Exist" in the MDT Documentation Library, which is installed as part of MDT 2010.