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From: mangler@cit-vax.Caltech.Edu (System Mangler)
Newsgroups: comp.unix.questions
Subject: Re: File system problems
Message-ID: <3427@cit-vax.Caltech.Edu>
Date: Sat, 1-Aug-87 03:47:30 EDT
Article-I.D.: cit-vax.3427
Posted: Sat Aug  1 03:47:30 1987
Date-Received: Sun, 2-Aug-87 06:29:31 EDT
References: <8467@brl-adm.ARPA> <1052@mind.UUCP>
Organization: California Institute of Technology
Lines: 15
Summary: Xylogics 450

In article <1052@mind.UUCP>, barry@mind.UUCP (Barry Lustig) writes:
> Under very
> heavy loads with 2 drives hanging off of it, the 451 has been known to
> write data with bits shifted.

Our old Xylogics 450 did the same thing, and this was without
overlapped seeks, so I don't understand how it can matter how
many drives are on the controller.  (Yes, we had two on ours).

I guess this makes the 451 "bug-for-bug" compatible with the 450?
Do they use the same microcode?

In our case this particular problem went away after a controller swap.

Don Speck   speck@vlsi.caltech.edu  {ll-xn,rutgers,amdahl}!cit-vax!speck