How much money is this going to save  you? :-) I mean, a site with really
big/old  archives and  lots of  lists typically  has 2-3G  used for  this
purpose.  Our smallest  ListPlex  server currently  has  10G of  sellable
capacity, of which we have only managed to sell 3G so far, but it made no
business sense to buy smaller drives. I  would just buy an extra 4G drive
and forget it.

  Eric