Hi. Well, guess Jonathan is a little bit ahead or maybe it''s coming really soon now (pool shrinking)??? http://blogs.sun.com/jonathan/entry/the_opacity_in_transparency "Its service profile is what makes it most interesting, however: because it runs Solaris/ZFS, as the drives fail (and all disk drives eventually do), the system requires no maintenance. Instead, it either slows down, or shrinks (customers can choose) - but the integrity of customer data is never at risk." This message posted from opensolaris.org