Hmm as a quick fix, would a "symbolic link" work… or not?
Perhaps the following will serve for "symbolic link" …
In Win Xp, at least, a disk partition can be mounted "over" an empty folder in the existing file structure; this is in addition to, or instead of, the more common MS-world practice of mounting by assigning drive letters.
In this way the TVersity data folder can stay where it is in the logical file structure, but be "fulfilled" by a completely independent disk area. Just go to the manage tool (on the my computer right-button menu), select the partition you want to hold the data, and invoke the change drive letter or path function (again a right-button menu item).
Before carrying out the operation, though, stop the TVersity server and move all the contents of the original data folder to (the top level of) the target partition. Then after the mount, restart the server.