I guess when I was reading about rebuilding a raid1 setup, it appears to be more complicated, and the support from the manufacturer of the system was none, to little.

The RAID5 with hot swappable drive sounds a little less intimidating.

When I was reading about the rebuilding process taking 8 hours to days, and some of the old drivers have to be updated, etc.. it seems like it not worth the headache. You might as well back up from a day old back up to a new computer, and not worry about the "redundancy" for a 1 doctor practice.