I have a Sonar X2, I7 920, Windows 7, 24gig ram, system. I currently only have two hard drives. One 480gig SSD drive, and a 1TB drive. I plan on buying another 1TB drive so that I can use the SSD drive for programs, 1TB drive for sounds and samples (my BFD2 audio will be on this drive too), and the other drive for my Sonar projects.   My question is, once I install Sony Vegas, do I need another drive for the video files?