753 not seen in Sun-3/280 (not as long, torturous)

[Bob Corwin]

In article <4140 at kalliope.rice.edu> phil at grumpy.cgrg.ohio-state.edu (Phil Ritzenthaler) writes:
>X-Sun-Spots-Digest: Volume 8, Issue 53, message 2 of 17
>
>| On one occasion, which was not reproducible, the controller did
>| see the drive in "format" but any attempt to do anything (read the
>| label or find the defect list) there was a error as follows:
>| 	Block error 0/0/0 : disk sequencer error
>| (that's the approximate, not exact, message) and the operation would
>| abort.
>| 
>| Does anyone have any clues as to what would be going on here?  Suggestions
>| as to things to test?  All machines are running SunOS 4.0.1, and have at
>| least one xy controller already.  The machine which *ran* with the xy753
>| had two 451s in it at the same time.
>

I have noted a similar experience when attempting to add a 753 to a 3/260
run- ning 4.0.1. In addition to not seeing the drive (Fujitsu M2382), the
controller would occasionally fail initialization. I called CRANEL
Incorporated (where the controller & drive came from), and they suggested
I move my 753 away from my 451controller (they were in adjacent slots
8&9). This solved my immediate problem.  They said that Xylogics has
admitted a potential contention problem exists between the 451 & the 753,
but that they have been unable to solve the problem.

Also, I don't know how the 753 comes packaged from Sun, but the controller
adapter I received had no EMI "Fingers" and so adjacent boards/fillers
require the plastic sheaths. 

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Bob Corwin Eastman Kodak (716) 726-5986 

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