Path: utzoo!utgpu!water!watmath!clyde!rutgers!gatech!mcnc!decvax!ucbvax!hplabs!pyramid!prls!mips!jen
From: jen@mips.COM (Fred Jen)
Newsgroups: comp.sys.apollo
Subject: Re: DN3000 disk troubles
Keywords: DN3000, disk not ready, drive controller time outs, crash
Message-ID: <1959@mips.mips.COM>
Date: 31 Mar 88 10:58:45 GMT
References: <3807@super.upenn.edu>
Reply-To: jen@mips.UUCP (Fred Jen)
Organization: MIPS Computer Systems, Sunnyvale, CA
Lines: 62

In article <3807@super.upenn.edu> adam@hyper.lap.upenn.edu (Adam Feigin) writes:
>I've been having some serious problems with my DN3000 lately. Heres the
>backgound & scoop....
>
>Configuration:
>DN3000, 4 MB memory, 348 MB Maxtor Disk, One-Slot ring controller, ETH-AT
>ethernet controller (its our ether gateway) and B & W display, SR 9.7 & 9.5 IX
>
>Problem(s):
>
>I've been having quite a few crashes lately. When I look at the syserr log,
>I have messages such as:
>
>crash status - disk controller error (OS/Disk mangler)
>crash status - drive timed out before operation completed (OS/disk mangler)
>crash status - disk not ready (OS/disk mangler)
>crash status - invalid disk address (OS/disk mangler)
>
>I also have one or two messages of the following form:
>
><insert you favorite date here> disk error
>winchester volx=1 daddr=<pick a spot, any spot>
>
>and also two like this:
>
>crash on < your favorite date, again>
>crash statis - illegal lock (OS/level 1 process mangler)
>
>I had one like this just a few minutes ago while trying to shutdown (The node
>became disconnected from the network for no apparent reason, which has been
>happening quite often lately, but thats another story !) and reboot.
>Our disk controller has been replaced twice, but it sure doesn't seem to be
>doing any good. Anybody seen this behavior ???
>
>							Adam
>------------------------------------------------------------------------------
>ARPAnet: {root,adam}@{hyper,apollo}.lap.upenn.edu          
>UUCP: {harvard,decwrl,rutgers,ihnp4}!super.upenn.edu!hyper.lap.upenn.edu!adam
>
>                                                      Adam Feigin
>						   Network Administrator
>					         Language Analysis Project
>					         University of Pennsylvania
> -----------------------------------------------------------------------------

I don't remember what rev of keyboard D-connector that can cause DN3000 to crash.  
Apparently, ESDI controller is very sensitive to static electricity.  On 
some rev of keyboard D-connectors, it does not make a good ground connection and
can cause the system to crash.

You should ask your service people and findout which rev or revs of keyboard
D-connector can cause problem to the system.

Good luck.

fred

-- 

-Fred Jen
UUCP: {decvax,ucbvax,ihnp4,hplabs}!decwrl!mips!jen
USPS: MIPS Computer Systems, 930 Arques, Sunnyvale, CA 94086, (408) 991-0306