I have a new TDK 32/10/40 that is running great alone on IDE 2, as master. If I were to add a slave hard drive, would it degrade performance of the CDRW? I only plan to use the hard drive for backups. Would it help to set Power Options in XP to shut off hard drives after a time? I assume this would shut off a backup drive that only gets used once a day. Thanks!