[rescue] Old sci and ide drives

Mouse mouse at Rodents-Montreal.ORG
Mon Mar 13 14:38:36 EDT 2023


> In the case of scuzzy, it seems there are so many scsi to SD adapter
> so that I'm wondering if there's any point in personally keeping
> narrow scsi devices anymore.

Maybe, maybe not.  I keep them around because I've got more narrow
machines than I do narrow<->wide adapters; also, why chuck perfectly
good drives?  (And, yes, I recognize good answers to that last question
do exist.)

> If I only kept the ultra 320s though, would I be likely to run into
> compatibility problems if I needed to put one in a ultra wide or even
> just fast wide machine?

My experience is that all the way from async narrow up through U320,
you can mix-&-match and it will Just Work (though in some cases the
fast device will slow down to match other things on the bus).  The one
except I've run into is that high-voltage differential is not
compatible with anything but other HVD.  Other than that, it doesn't
matter - async, sync; narrow, wide; slow, medium, fast, ultra; the
worst that happens when you mix them up is that it runs at the slower
speed.

I've even had things work surprisingly tolerant of mis-termination:
I've even had single-terminated and triple-terminated buses work,
though I've also had them fail - I'd not count on anything but double
termination, one at each end.

> For what I do decide to get rid of, is there people who would want
> them for the price of packaging and shipping, or should they just be
> recycled?

Well, like you, I suspect that the former will be the more popular
option here.  Depending on where you are geographically and what you're
getting rid of, I might even want a few myself.

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