From owner-freebsd-questions@FreeBSD.ORG Mon Oct 13 04:28:06 2008 Return-Path: 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 68D00106568E for ; Mon, 13 Oct 2008 04:28:06 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id EF03F8FC1B for ; Mon, 13 Oct 2008 04:28:05 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1KpF2K-0002VG-6d for freebsd-questions@freebsd.org; Mon, 13 Oct 2008 04:28:04 +0000 Received: from hexadecagram.org ([166.70.126.65]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 13 Oct 2008 04:28:04 +0000 Received: from acc by hexadecagram.org with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 13 Oct 2008 04:28:04 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-questions@freebsd.org From: Anthony Chavez Date: Sun, 12 Oct 2008 22:27:47 -0600 Lines: 43 Message-ID: References: <20081013040937.GA8578@icarus.home.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: hexadecagram.org User-Agent: Mozilla-Thunderbird 2.0.0.16 (X11/20080724) In-Reply-To: <20081013040937.GA8578@icarus.home.lan> Sender: news Subject: Re: RAID migration 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: Mon, 13 Oct 2008 04:28:06 -0000 Jeremy Chadwick wrote: > On Sun, Oct 12, 2008 at 07:10:31PM -0600, Anthony Chavez wrote: >> Dear freebsd-questions, >> >> I have a HighPoint 1820 RAID controller that is using 1 channel for an >> OS drive and 3 channels for a RAID-5 array. I'm interested in migrating >> to a new (possibly non-HighPoint) card, and am wondering if I will be >> able to plug the OS drive into one channel on the new card and have it >> "just work." Is it a safe bet that it will? > > It "probably" will work, assuming that the OS disk is not configured > as a RAID or array member in the RAID cards' BIOS. Meaning, if you're > using the disk on the controller purely in a "JBOD" fashion, yes, it > should work. In the WebGUI's "logical device information" section, that particular drive is listed as a "hard disk" whereas the other 3 are clearly spelled out as a "RAID 5" array. When I shut the machine down, I will check the BIOS itself to see if it specifically states "JBOD." Thanks for the pointer. Regardless, I will be backing it up before I attempt to plug it into a new RAID controller. >> I'm curious to know if the array could be migrated just as easily, or if >> I should listen to my instinct and count on bumping into >> incompatibilities due to proprietary implementations. > > I can absolutely guarantee you that you will lose access to all of your > data once you plug those 3 disks into another controller. > > You need to back up all of your data from the RAID-5 array using > something like rsync, cpdup, or dump, move the disks over to the > non-RAID controller, format them (in whatever fashion you want), > and then restore the backup. Exactly what I planned to do, but figured I'd ask anyhow. ;-) Thank you for responding. -- Anthony Chavez http://hexadecagram.org/ mailto:acc@hexadecagram.org xmpp:acc@hexadecagram.org