On Feb 25, 2010, at 6:35 PM, Patrick Giagnocavo <patrick at zill.net> wrote: > RAID5 = write hole; run 2x RAID1 instead perhaps? For a true test machine in need of as much speed as possible, why not RAID0 (striped)? The lack of redundancy shouldn't be an issue on a test machine with recent vintage hardware... Lionel