Bill Frantz wrote:
> >Secondly, I'm not sure where your driver sits - but assuming we are
> >talking layered drivers, suppose the two disk drivers share the same
> >underlying SCSI bus - letting them both have a go is not necessarily so
> >great, because they tie up the bus while they do it. Also, although SCSI
> >detach seems like a good idea in these cases, I've seen it take a
> >remarkably long time on some devices (like a millisecond) to detach and
> >reattach.
>
> Perhaps we should just get one SCSI bus, attack a RAID to it, and let the
> hardware to all the work. :-)
Unless you are after hotswap and the like, then external RAID is slower than doing it yourself :-) (of course, its a great way to make profit for h/w manufacturers). Even then, its probably cheaper to add extra CPU power/SCSI busses than to do it externally, but possibly more complex...
Cheers,
Ben.
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