From owner-freebsd-stable@FreeBSD.ORG Thu Dec 8 22:31:04 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from green.homeunix.org (freefall.freebsd.org [216.136.204.21]) by hub.freebsd.org (Postfix) with ESMTP id 78FD416A420; Thu, 8 Dec 2005 22:31:04 +0000 (GMT) (envelope-from green@green.homeunix.org) Received: from green.homeunix.org (green@localhost [127.0.0.1]) by green.homeunix.org (8.13.4/8.13.1) with ESMTP id jB8MV3Rf037472; Thu, 8 Dec 2005 17:31:03 -0500 (EST) (envelope-from green@green.homeunix.org) Received: (from green@localhost) by green.homeunix.org (8.13.4/8.13.1/Submit) id jB8MV3GI037471; Thu, 8 Dec 2005 17:31:03 -0500 (EST) (envelope-from green) Date: Thu, 8 Dec 2005 17:31:02 -0500 From: Brian Fundakowski Feldman To: Torfinn Ingolfsen Message-ID: <20051208223102.GE98704@green.homeunix.org> References: <20051208001857.68ac4fef.torfinn.ingolfsen@broadpark.no> <43983204.9080609@fer.hr> <20051208203033.3b56ebe4.torfinn.ingolfsen@broadpark.no> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051208203033.3b56ebe4.torfinn.ingolfsen@broadpark.no> User-Agent: Mutt/1.5.11 Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 6.0 as storage server with raid5? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Dec 2005 22:31:04 -0000 On Thu, Dec 08, 2005 at 08:30:33PM +0100, Torfinn Ingolfsen wrote: > On Thu, 08 Dec 2005 14:15:48 +0100 > Ivan Voras wrote: > > > You could use graid3(8) - it has data+parity components like raid5. > > What about write performance? Based on RAID3 documentation I have read > (on the 'net, so I cannot vouch for the correctness of it), you will get > worse write performance than with RAID5. Does anybody have some real > numbers here? > > > I've been using it for more than a year now and didn't have problems > > with it. Didn't have to try recovery from a dead disk also, but > > should work ok. > > I would prefer a firsthand "crash" report that tells what happened, and > a step-by-step "here's how I fixed it" guide, but ok. :-) It is REALLY FAST! Make sure you use 6.0-RELEASE or later so that you have the fix for lock-ups in certain usage patterns and also configure it for performance with "graid3 label -r". -- Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\ <> green@FreeBSD.org \ The Power to Serve! \ Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\