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Date:      Thu, 5 Mar 1998 23:17:54 -0600
From:      Karl Denninger  <karl@mcs.net>
To:        David Kelly <dkelly@hiwaay.net>
Cc:        scsi@FreeBSD.ORG
Subject:   Re: SCSI low level format, good or bad
Message-ID:  <19980305231754.48585@mcs.net>
In-Reply-To: <199803060027.SAA11083@nospam.hiwaay.net>; from David Kelly on Thu, Mar 05, 1998 at 06:27:00PM -0600
References:  <karl@mcs.net> <199803060027.SAA11083@nospam.hiwaay.net>

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On Thu, Mar 05, 1998 at 06:27:00PM -0600, David Kelly wrote:
> Karl Denninger writes:
> > On Mon, Mar 02, 1998 at 06:06:27AM -0600, David Kelly wrote:
> > > Karl Denninger writes:
> > > > 
> > > > I've seen a non-trivial number of disks come off the factory line with
> > > > non-optimal formats.  I don't know if its a temperature tolerance thing o
> > r
> > > > what, but this has been my experience.
> > > 
> > > What do you consider a non-optimal format?
> > 
> > One which generates errors after short periods of being online (small numbers
> > of unrecoverable block errors), among other things.  Then there is the
> > entire mode page issue.
> 
> Come to think of it, problems like this could be due to a noisy or poor
> power supply. Often they get noisier (electrically) when they get hot.

On one disk out of a half-dozen on the same power supply? :-)

(PS: Yes, I've checked that, and no, its not the problem) :-)

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