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From: "Amir Y. Rosenblatt" <amir@neuron.net>
Message-Id: <199608252130.RAA01702@prozac.neuron.net>
Subject: Re: -current kills harddrives
In-Reply-To: <199608240641.IAA08952@uriah.heep.sax.de> from J Wunsch at "Aug 24, 96 08:41:51 am"
To: joerg_wunsch@uriah.heep.sax.de
Date: Sun, 25 Aug 1996 17:30:43 -0400 (EDT)
Cc: freebsd-current@freebsd.org, nirva@ishiboo.com
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> > no, but it could push it over the edge if cooling is not sufficient..
> 
> Btw., if i read the mail correctly, the drives are not going entirely
> dead.  It's just that they decouple from the SCSI bus, so perhaps they
> are simply reacting to a detected overheating condition.

As it happens, the drive of mine that I mentioned (this is now the second
boot disk I've had on this machine) bit it last night.  Started getting
messages like:

sd0(ahc0:0:0): timed out in datain phase
fatal process exception; page fault, fault V=0x18920

and a slew of the usual SCSI warnings (see the earlier posts for specifics
-- I'd put some in but the thing was so hosed that it couldn;t even log the
errors).  I could hear the disk making little clicking noises (the kind it
makes when you power it up) and spinnign down and then back up over and
over.  I brought tha machine down, took off the face plates and let it cool
off for an hour (the room it's in has a/c).  Once ves were cool to the
touch I tried to bring it back up again, but alas, no dice.  I spent a
solid 2 more hours at iut before giving up.  Tried one more time this
morning but to no avail and just spent the day swapping in a new disk
(lucky I have a spare).  That'll make 2 'cudas dead in about 3-4 weeks.  I
am:  displeased.  Any suggestions (includsing recommendations for
appropriate external enclosures that'll keep these suckers cool -- I still
have a 3rd disk I want to add in to the system).

	-Amir