For best multiplexing performance, dedicate two or three Ultra Wide A/V or FireWire hard disks to your project (make sure they contain only your media and no other programs that might fragment the disk and decrease performance). • If you have three disks, use one for video assets, one for audio assets, and the third for the finished files.
You can sure see how disc space is gonna add up fast... good thing drives have gotten as inexpensive as they have!! Makes me think back to when I paid $1049.00 for a 45
MB drive for my MacPlus in '87...OUCH!!!!!