From owner-freebsd-scsi  Sat Sep  7 22:27:13 1996
Return-Path: owner-freebsd-scsi
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id WAA24971
          for freebsd-scsi-outgoing; Sat, 7 Sep 1996 22:27:13 -0700 (PDT)
Received: from brasil.moneng.mei.com (brasil.moneng.mei.com [151.186.109.160])
          by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id WAA24944;
          Sat, 7 Sep 1996 22:27:05 -0700 (PDT)
Received: (from jgreco@localhost) by brasil.moneng.mei.com (8.7.Beta.1/8.7.Beta.1) id AAA17753; Sun, 8 Sep 1996 00:23:08 -0500
From: Joe Greco <jgreco@brasil.moneng.mei.com>
Message-Id: <199609080523.AAA17753@brasil.moneng.mei.com>
Subject: Re: Streamlogic RAIDION drive arrays
To: terry@lambert.org (Terry Lambert)
Date: Sun, 8 Sep 1996 00:23:08 -0500 (CDT)
Cc: chuckr@glue.umd.edu, taob@io.org, klam@awod.com,
        freebsd-hackers@FreeBSD.org, freebsd-scsi@FreeBSD.org
In-Reply-To: <199609072345.QAA02543@phaeton.artisoft.com> from "Terry Lambert" at Sep 7, 96 04:45:10 pm
X-Mailer: ELM [version 2.4 PL24]
Content-Type: text
Sender: owner-freebsd-scsi@FreeBSD.org
X-Loop: FreeBSD.org
Precedence: bulk

> What if:
> 
> 1)	You sell commercial feed services, so the news has to be reliable?
> 	If you loase your feed data, so does everyone down stream from
> 	you.

You should still be able to recover.  In case of catastrophic failure, I
generally try to rebuild back past the point at which my drive crashed
anyways.  Having to absorb the penalty for RAID operations may reduce 
your spool's throughput anyways..  

> 2)	You sell posting services (as an ISP)?  If your crash occurs
> 	before the feed distribution, but after an article has been
> 	posted, your customer's article is lost.

That would be a matter of incompetence.  If you are not doing real time
outbound feeds in this day and age, you do not belong playing the news
game.  I can measure propagation time for locally posted articles from
any of the news servers that I run to any of the Top 5 news servers in
terms of seconds.. and count on one hand.  :-)  (I may be an example of
an unusually well connected site, but the point is, I move the articles
and I do so _fast_).

... JG