From owner-freebsd-questions@FreeBSD.ORG Tue Jun 14 20:08:21 2005 Return-Path: X-Original-To: freebsd-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 B745B16A41C for ; Tue, 14 Jun 2005 20:08:21 +0000 (GMT) (envelope-from chad@shire.net) Received: from hobbiton.shire.net (hobbiton.shire.net [166.70.252.250]) by mx1.FreeBSD.org (Postfix) with ESMTP id 57DBB43D5C for ; Tue, 14 Jun 2005 20:08:21 +0000 (GMT) (envelope-from chad@shire.net) Received: from [67.161.222.227] (helo=[192.168.99.68]) by hobbiton.shire.net with esmtpa (Exim 4.51) id 1DiHhs-000Mob-6R; Tue, 14 Jun 2005 14:08:20 -0600 In-Reply-To: References: <1122F428-95E6-4680-AB38-86A5A5B0F91A@dylangoss.com> Mime-Version: 1.0 (Apple Message framework v730) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <9E1E81DA-ACD7-4B0A-A331-3911A2500248@shire.net> Content-Transfer-Encoding: 7bit From: "Chad Leigh -- Shire.Net LLC" Date: Tue, 14 Jun 2005 14:08:19 -0600 To: D. Goss X-Mailer: Apple Mail (2.730) X-SA-Exim-Connect-IP: 67.161.222.227 X-SA-Exim-Mail-From: chad@shire.net X-Spam-Checker-Version: SpamAssassin 3.0.3 (2005-04-27) on hobbiton.shire.net X-Spam-Level: X-Spam-Status: No, score=-0.2 required=5.0 tests=AWL,BAYES_50, GREYLIST_ISWHITE autolearn=disabled version=3.0.3 X-SA-Exim-Version: 4.2 (built Mon May 30 00:43:02 MDT 2005) X-SA-Exim-Scanned: Yes (on hobbiton.shire.net) Cc: FreeBSD questions Subject: Re: 36.4GB drive formats out to 32.8GB? what am I missing please grep sectors /var/run/dmesg.boot X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 14 Jun 2005 20:08:21 -0000 On Jun 14, 2005, at 11:51 AM, D. Goss wrote: > On Jun 14, 2005, at 8:48 AM, Wojciech Puchar wrote: > > >> >> think twice before making RAID-5 array. are you sure small writes >> will not be too common? >> > > No, you are on to something - I will be making small writes / > parity calculations. This is going to be a web server but it is > for clients and they do have sites running with SQL backends and > not just static HTML content. > > >> i think buying 4 80GB FAST IDE/SATA drives and arranging it as >> RAID-10 will give you 160GB of FAST and protected storage. >> performance gain using mirror+strip will likely offset this of >> using faster 15k rpm drives. >> >> and it will be for sure cheaper. you may put 6 drives (RAID-10) >> and even larger drives and still have cheaper alternative and even >> faster. and MUCH more space. >> > > Sure, it will be cheaper. For me it's too late, I've purchased the > 4 x SCSI 15k drives I need for this project. I have bought mostly > unopened, in-box but secondhand IBM drives/sleds. They are still > expensive but certainly not the (what I consider) insane prices for > the same drives IBM direct. I'm paying around 1/3 of "list". The SCSI disks will certainly last longer. If you can do the RAID 1 +0 with the SCSI you will probably be that much further ahead... Chad