Luigi Fabio <luigi.fabio@xxxxxxxxx> writes: > Well, there are several possible explanations, but persistence is > desireable - so evidently enumeration occurs according to controller > order in a repeatable way until something changes in the configuration > - or until you change kernel, someone does something funny with a > driver and the order changes. In 28 years of using Linux, however, > this has happened.. rarely, save for before things were sensible WAY > back when. I *think* it is only because the probes are all *started* in the natural order, so as long as the drives all respond in the same, short amount of time, you get no surprises. If one drive decides to take a little longer to answer today though, it can throw things off.