Now I'm going to build a linux server for my tivo hd recordings .. after wrestling with going the blu ray route and being helped out of that choice on this forum. I'm considering 2 servers, one solely to back up the primary server. If I do this, why bother with raid? Seems to me the only thing raid buys me is the possibility of a quicker recovery than restoring a backup; but maybe not, depending. OTOH rebuilding drives through raid thrashes the heck out of them, right? So why bother with raid?