[JoBoy]

What's wrong with setting the Mac to Startup or Wake just before SD! is set to run? I do this every day. I set the Startup or Wake time in the schedule of the Energy Saver system preference pane. The Mac starts up in the middle of the night and SD! does its copies. The last scheduled copy is set to shut down the computer when the job is done. If I'm doing an all nighter and the machine is on at the startup time, the machine ignores the set startup and the copying begins, but I have the option of discontinuing it if it interferes with what I'm doing.