From owner-freebsd-stable@FreeBSD.ORG Fri Jan 12 03:42:17 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 5937016A47C for ; Fri, 12 Jan 2007 03:42:17 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: from dan.emsphone.com (dan.emsphone.com [199.67.51.101]) by mx1.freebsd.org (Postfix) with ESMTP id 1E9D613C469 for ; Fri, 12 Jan 2007 03:42:16 +0000 (UTC) (envelope-from dan@dan.emsphone.com) Received: (from dan@localhost) by dan.emsphone.com (8.13.6/8.13.8) id l0C3KSkc033999; Thu, 11 Jan 2007 21:20:28 -0600 (CST) (envelope-from dan) Date: Thu, 11 Jan 2007 21:20:28 -0600 From: Dan Nelson To: Jo Rhett Message-ID: <20070112032028.GC46272@dan.emsphone.com> References: <45A5FD8A.6080409@svcolo.com> <2918081F-D376-410B-B6FD-42BDD3323575@svcolo.com> <20070111213444.GB17185@zone3000.net> <20070112005510.2e145462.torfinn.ingolfsen@broadpark.no> <669E8D5D-E286-42DC-800F-24D7DDB2469F@svcolo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <669E8D5D-E286-42DC-800F-24D7DDB2469F@svcolo.com> X-OS: FreeBSD 6.2-PRERELEASE User-Agent: Mutt/1.5.13 (2006-08-11) Cc: Torfinn Ingolfsen , freebsd-stable@freebsd.org Subject: Re: 2.4TB disk - MBR and GPT coexist? 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: Fri, 12 Jan 2007 03:42:17 -0000 In the last episode (Jan 11), Jo Rhett said: > >On Thu, 11 Jan 2007 13:56:43 -0800 Jo Rhett wrote: > >>Thanks for the reply. The problem is that I have a single 6-drive > >>(550gb/ea) RAID-5 array. If I split two disks off to make a RAID-1 > >>boot device, I'll lose 1TB of usable storage. > > On Jan 11, 2007, at 3:55 PM, Torfinn Ingolfsen wrote: > >Hmm, why can't you just make your controller create two logical arrays > >onto the one physical array? Doesnt the controller support this > >feature? > > Not any one that I've ever seen in commodity disks. Yes, on big > fiber channel disk cabinets. No to 6-8 drive raid controllers. I've got ancient AMI Megaraid controllers (Dell PERC 2/Si cards) that can put multiple logical drives on one RAID set, so I'm surprised that a modern controller can't. -- Dan Nelson dnelson@allantgroup.com