A vapor phase epitaxy apparatus having a processing chamber with a target workpiece such as a wafer being received therein is disclosed. The method includes maintaining a master copy of a software on a server and capturing changes to the master copy of the software on an update disk image, where the changes are contained in at least one chunk. The tone generated by the apparatus is a unique sound that is readily recognized by the audience. The retrofit-style lamp also includes a housing including the plurality of light sources, and attached to the one-dimensional linear batwing lens.