I have set up Veritas (BE8.6) to backup to disk, but apparently there's a limit to how much data it will back up. How can I configure it so that it'll back up 120 Gigs to a folder
What errors are you getting? (check BE and Windows Event Log)
What size is your disk? Partition?
I had no problems backing up 200+ GB to tape; so there shouldn't be any difference in going to disk.