Just gonna quote myself here:
Problem is, I dont have 2 large harddrives. And I dont want to spend money on this project either... (Hence the server made entirely of scavenged hardware)
Maybe Ill dig up the cash for another 250 gig drive before I get the time to do the actual migration - as you say, there ARE many advantages. But I do enjoy the fact that my server has cost me ZERO bucks, other than the power uses. I have a huge pile of PC2100 ram lying around... maybe someone will be interested in a trade for a 250 gig harddrive...
Just for laughs and giggles, here she is:

2,4GHz celeron, 1 gb ram, 40 + 250gb harddrives, running surprisingly well. Will be changed to an IBM Netvista 8305-21G desktop pc (2.0 GHz P4)