From owner-freebsd-questions@FreeBSD.ORG  Thu Jun 30 21:13:05 2005
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: questions@freebsd.org
Delivered-To: freebsd-questions@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 8813016A41C
	for <questions@freebsd.org>; Thu, 30 Jun 2005 21:13:05 +0000 (GMT)
	(envelope-from mark@gaiahost.coop)
Received: from biodiesel.gaiahost.coop (biodiesel.gaiahost.coop [64.95.78.120])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 617D343D1D
	for <questions@freebsd.org>; Thu, 30 Jun 2005 21:13:05 +0000 (GMT)
	(envelope-from mark@gaiahost.coop)
Received: from rabbit.hubcapconsulting.com
	(host-216-153-147-194.spr.choiceone.net [::ffff:216.153.147.194])
	(AUTH: LOGIN mark@hubcapconsulting.com)
	by biodiesel.gaiahost.coop with esmtp; Thu, 30 Jun 2005 17:13:02 -0400
	id 007FC0A6.42C46060.00005E9F
Received: by rabbit.hubcapconsulting.com (sSMTP sendmail emulation);
	Thu, 30 Jun 2005 17:10:28 -0400
Date: Thu, 30 Jun 2005 17:10:28 -0400
From: Mark Bucciarelli <mark@gaiahost.coop>
To: "questions@freebsd.org" <questions@freebsd.org>
Message-ID: <20050630211028.GP1280@rabbit>
Mail-Followup-To: "questions@freebsd.org" <questions@freebsd.org>
References: <42C45161.1070402@toldme.com>
	<20050630204448.8E0F543D4C@mx1.FreeBSD.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
In-Reply-To: <20050630204448.8E0F543D4C@mx1.FreeBSD.org>
User-Agent: Mutt/1.4.2.1i
Cc: 
Subject: Re: RAID Cards
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 30 Jun 2005 21:13:05 -0000

On Thu, Jun 30, 2005 at 04:48:18PM -0400, Simon wrote:

> Just because there is no monitoring tool available due to lack of
> support, doesn't mean the card itself is bad. I much prefer hardware
> implementation than software.  True hardware RAID frees up a lot of
> CPU time if you have heavy IO and software just can't keep up if you
> utilize CPU intensive apps.

Why do you say hardware raid frees up "a lot of CPU time?"  Have you
measured this?

Do you have any servers that are cpu-bound instead of io-bound?

I am having this exact discussion with my business partner at the
moment--he is also a proponent of hardware raid.  I don't see the big
win in hardware raid.

I should probably search the archives, I sure this topic has been
covered in detail before ...

m