IDE controllers

[Alan H. Mintz]

In article <1990Nov21.093114.15468 at grian.cps.altadena.ca.us>, alex at grian.cps.altadena.ca.us (Alex Pournelle) writes:
> 
> You would do well to avoid XENIX and IDE drives.  I have a system with
> just this configuration--and it will lock up every 6 to 8 hours
> unpredictably with the hard-disk access light on.  It is dependent on
> the controller, but even more dependent on the hard-disk (which, since
> IDE stands for Integrated Drive Electronics, is the real controller in
> these things).  The drive is a Conner CP-3104, the 100Mbyte Conner drive
> that Dell and Compaq use at great length; my spies at SCO say this drive
> is not completely emulating the WD-1010 and -2020 controllers, the only
> two IDE controllers they "officially" support.

To clarify my earlier post, we have experienced no trouble with Dell IDE
machines employing the Maxtor 190Mb drive under SCO XENIX 386.

> Note also that Dell, Compaq and Northgate push UNIX on their products
> big time, and that same use IDE.  It's not clear to me what *nix they're
> using, though.

Dell UNIX SVR3 is an ISC port. I understand SVR4 was completely in-house.
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