>On Tue, 14 Dec 2004 10:47:20 +0000, chris@xxxxxxxxxxxxxxxxxxxxx=20 >> My experience is that with either RAID 5 or 10 you have to be=20 >> unbelievably unlucky to lose data providing disks are replaced when=20 >> they fail and not left for a few days or even more. You are talking=20 >> extremely remote. It might be an idea to get someone to do the maths=20 >> and work out the probabilities. > >I, for one, have been that unlucky on at least one occasion Me too. No one was listening to the standby machine 350 miles away, going <little fly voice> Help me! Help me!</little fly voice> Also, more often, seen what Cary points out, failures happen in clusters or dominos. Joel Garry=20 http://www.garry.to=20 =A0 -- //www.freelists.org/webpage/oracle-l