From owner-freebsd-questions@FreeBSD.ORG Wed Mar 3 13:26:46 2004 Return-Path: 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 8FD4D16A4CE for ; Wed, 3 Mar 2004 13:26:46 -0800 (PST) Received: from mail.snowfall.se (guldivar.snowfall.se [212.112.184.141]) by mx1.FreeBSD.org (Postfix) with ESMTP id 25B4E43D2F for ; Wed, 3 Mar 2004 13:26:46 -0800 (PST) (envelope-from stefan@snowfall.se) Received: by mail.snowfall.se (Postfix, from userid 1000) id C4804762A; Wed, 3 Mar 2004 22:26:43 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by mail.snowfall.se (Postfix) with ESMTP id C2ADC7613; Wed, 3 Mar 2004 22:26:43 +0100 (CET) Date: Wed, 3 Mar 2004 22:26:43 +0100 (CET) From: Stefan Cars X-X-Sender: stefan@guldivar.globalwire.se To: Matthew Seaman In-Reply-To: <20040303160658.GA32905@happy-idiot-talk.infracaninophile.co.uk> Message-ID: <20040303222612.W39053@guldivar.globalwire.se> References: <40452715.5030304@mindcore.net> <200403031453.49069.danny@ricin.com> <20040303160658.GA32905@happy-idiot-talk.infracaninophile.co.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: Danny Pansters cc: freebsd-questions@freebsd.org Subject: Re: 1 processor vs. 2 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Mar 2004 21:26:46 -0000 Okey, but if you would compare RAID-1 on two disks compared to RAID-5 on three disks then ? What would be the faster ? / Stefan On Wed, 3 Mar 2004, Matthew Seaman wrote: > On Wed, Mar 03, 2004 at 02:53:49PM +0100, Danny Pansters wrote: > > On Wednesday 03 March 2004 14:05, Stefan Cars wrote: > > > Dual Xeon, 2.4 GHZ with 2GB of RAM or Xeon 3.0 GHZ with 2GB of RAM > > > and > > > RAID-1 on three disks or RAID-5 on three disks. > > > > RAID5 on 3 disks? That's useless. > > 3 disks is the minimum quantity for RAID5: it's certainly not ideal, > but it is by no means useless. RAID5 setups can span 3 or more drives > -- I don't know what the practical limit is for Vinum or typical PC > raid controller cards, but the last time I used it (which I admit was > some years ago) Veritas Volumne Manager under Solaris made the strong > suggestion that no more than 7 drives be put into one RAID5 group. > > Cheers, > > Matthew > > -- > Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks > Savill Way > PGP: http://www.infracaninophile.co.uk/pgpkey Marlow > Tel: +44 1628 476614 Bucks., SL7 1TH UK > -- Stefan Cars Snowfall Communications Tel: +46 (0)18 430 80 50 - Direct: +46 (0)18 430 80 51 Mobile: +46 (0)708 44 36 00 - Fax: +46 (0)708 44 36 04 ______________________________________________________________________ SNOWFALL DISCLAIMER: The information contained in this email and in any attachments is confidential and may be privileged. If you are not the intended recipient, please destroy this message and notify the sender immediately. You should not retain, copy or use this email for any purpose, nor disclose all or any part of its content to any other person. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of Snowfall Communications. Snowfall Communications monitors the content of emails sent and received via its network for unauthorised use and for other lawful business purposes. The contents of an attachment to this email may contain viruses which could damage your computer system. While Snowfall Communications has taken every reasonable precaution to minimise this risk, we cannot accept liability for any damage which you sustain as a result of software viruses. You should carry out your own virus checks before opening the attachment.