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Date:      Fri, 16 Oct 1998 19:58:17 +0000 (GMT)
From:      Terry Lambert <tlambert@primenet.com>
To:        dkelly@hiwaay.net (David Kelly)
Cc:        tlambert@primenet.com, freebsd-fs@FreeBSD.ORG, freebsd-scsi@FreeBSD.ORG
Subject:   Re: filesystem safety and SCSI disk write caching
Message-ID:  <199810161958.MAA24426@usr04.primenet.com>
In-Reply-To: <199810161109.GAA16802@nospam.hiwaay.net> from "David Kelly" at Oct 16, 98 06:09:15 am

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> Why not? It might be interesting to put a recording voltmeter such as a 
> digital storage oscilloscope on the HD power leads when Don is punching 
> the reset. No telling what kind of voltage surges are generated when 
> the load on the power supply is altered.
> 
> No telling *if* there are changes in the PS load when reset is punched 
> either. Think my PPro-166 CPU pulls 10A. If it suddenly stops pulling 
> that much current when RESET is active then what does the PS do?

The errors seen are a result of uncommitted data in the drive cache,
not power spikes and gremlins.  The interaction is well understood,
and on firm footing unrelated to Stephan King novels.


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.

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