From owner-freebsd-questions@FreeBSD.ORG  Tue Sep 30 14:15:47 2008
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 53B041065688;
	Tue, 30 Sep 2008 14:15:47 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (wojtek.tensor.gdynia.pl
	[IPv6:2001:4070:101:2::1])
	by mx1.freebsd.org (Postfix) with ESMTP id 661458FC13;
	Tue, 30 Sep 2008 14:15:45 +0000 (UTC)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from wojtek.tensor.gdynia.pl (localhost [IPv6:::1])
	by wojtek.tensor.gdynia.pl (8.14.2/8.14.2) with ESMTP id m8UEFajW016768;
	Tue, 30 Sep 2008 16:15:37 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Received: from localhost (wojtek@localhost)
	by wojtek.tensor.gdynia.pl (8.14.2/8.14.2/Submit) with ESMTP id
	m8UEFZf2016765; Tue, 30 Sep 2008 16:15:36 +0200 (CEST)
	(envelope-from wojtek@wojtek.tensor.gdynia.pl)
Date: Tue, 30 Sep 2008 16:15:35 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Danny Do <ai_quoc@hotmail.com>
In-Reply-To: <BAY139-DAV5423DFBF403B32AA0C22690430@phx.gbl>
Message-ID: <20080930161407.E16761@wojtek.tensor.gdynia.pl>
References: <1222681181.48e0a25d094c3@www.inbox.lv>
	<BAY139-DAV13C8982A51CD9B05C74D5090430@phx.gbl>
	<48E21C66.8080407@FreeBSD.org>
	<BAY139-DAV5423DFBF403B32AA0C22690430@phx.gbl>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
Cc: 'Josh Paetzel' <jpaetzel@freebsd.org>, freebsd-questions@freebsd.org
Subject: RE: Optimal File System config for 2.5TB RAID5
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: Tue, 30 Sep 2008 14:15:47 -0000

> SATA using 1MB IO transfer size, I don't know! I think the SATA system will

SATA drives aren't much slower than SCSI.

simply make this 1MB IO transfer size.

as you still want "hardware" RAID5 it looks you simply read maybe every 
second word from my mails we exchanged privately.