" Also I'm told that the old "RAID-5 is always bad" notion is considerably more nuanced nowadays, and that many of the earlier OLTP write performance problems w

" Also I'm told that the old "RAID-5 is always bad" notion is considerably more nuanced nowadays, and that many of the earlier OLTP write performance problems with RAID-5 have been largely mitigated with modern RAID controllers." Not to be snarky, but do you have a source for that? RAID5 has a pretty big intrinsic write penalty.