most dvd burners are IDE not SCSI. but if you already have SCSI burner they will work also. to get what you want done would be best by building a custom computer for this specific task. you cannot simply buy this machine from Dell, HP, Compaq, ect.
get a full tower case that holds enough dvd burner drives that you need. you also need to spend about $100 or more on a good 500 watt power supply or greater. skimping on the power supply is a bad idea, why risk all that expensive equipment to cheap components?
the software you need to make copies is Ahead Nero. nero allows you to copy data to multiple burners simutaneaously. nero is simple to use, but powerful.