DVD Studio Pro allows you to format a DVD project to a DLT drive. DLT drives are typically connected to your computer with a SCSI card.
If you attempt to format a DLT drive on a Mac Pro, the write may not be successful. If this occurs, the progress bar window will report "Writing lead in data" but will not progress any further and the write will need to be cancelled.
As a workaround, inquire with your replicator about alternative delivery methods such as external hard drive or recordable DVD.
This document will be updated as more information becomes available.