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Date:      Mon, 4 Dec 1995 17:19:51 -0800 (PST)
From:      Julian Elischer <julian@ref.tfs.com>
To:        rmallory@wiley.csusb.edu (Rob Mallory)
Cc:        scsi@freebsd.org
Subject:   Re: df of cdrom bit hard
Message-ID:  <199512050119.RAA06982@ref.tfs.com>
In-Reply-To: <199512050050.QAA29977@wiley.csusb.edu> from "Rob Mallory" at Dec 4, 95 04:50:03 pm

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> 
> > 
> > looks like a power glitch.. are those devices in an external cabinet?
> 
> 3 scsi disks + HP1533A + plextor cdrom, all internal, in that order
> with plextor termination enabled, I can't remember if the dat has term
> power enabled. and one st31200W on the other end (internal).
> 300W power supply, external UPS.
hmm 3 disks?
that could be quite a lot of power, but 300watts should cover it.. 

>   after the bus reset, the cdrom gave  I/O errors, but the bus was not hung.
> I sync'd rebooted, and everything was fine.
> 
> > OR
> > possibly the ncd drive detected a hang and reset the scsi bus..
oops             ^^^^^^^^^^
ncr driver, not ncd drive
> 
> I thought plextor 6-plex's were the "more friendly" type :)
> ...should I add a ribbon-->micro-D converter and terminate with
>    an active terminator?

what termination do you have now?

you should examine this carefully before proceeding


> -RM
> 
> > 
> > what do you think stefan?
> > julian
> > 
> 




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