I have a tape drive that I use to backup every night, but my supervisor wants our company data that is stored on the PDC to also be backed up on the BDC. Is it worth my time when I can just restore off of the tape drive? What would be the best way to do this without effecting the performance the PDC. I read that I could write a batch file to do this, but can't find the command for this. Thanks Michelle

Nothing wrong with redundancy - ever hear of tape failures? You could look into Microsoft's Robocopy to sync files. It is a copy process that, with command line switches, can perform a purge to do a snapshot synch - you could write a simple batch to handle this and use Scheduler or Task Scheduler to run during off hours to not affect perfomance too much.