Right now I have two HDDs, one 20 gig and one 80 gig. the 80 is megabytes away from being full, and I just got a second 80 gigger in the mail today. Is it possible to set up the two 80s in a RAID 0 config with the one drive being already full? or do they both need to be empty to set up RAID 0 so that they will stripe the right way? Thanks.