@mashley With multcasting only one image is sent out from the server. So all the clients that participate in the multicast image work in lock step. So the speed of your image deployment is based on the slowest computer in the group. You do want to kind of group like systems (performance wise) together in a deployment group to get the best performance. If you have fast computers but one is behind a 100Mb/s link, that one behind the slow link will slow down the entire group.
M