Originally posted by hacketta1
He's responded that HP claim that on this array RAID 5 performs just as well as RAID 0+1 (my preferred option, we currently have an EMC Symmetrix and utilise this).
Tell them to put up or shut up. Have them give you two boxes to evaluate, one configured with RAID 1+0 and the other with RAID 5 and run your application on them. If there's no difference, go with the RAID 5.