From owner-freebsd-questions Fri Aug 17 11:58: 8 2001 Delivered-To: freebsd-questions@freebsd.org Received: from mail.wolves.k12.mo.us (mail.wolves.k12.mo.us [207.160.214.1]) by hub.freebsd.org (Postfix) with ESMTP id 0049F37B408; Fri, 17 Aug 2001 11:58:01 -0700 (PDT) (envelope-from cdillon@wolves.k12.mo.us) Received: from mail.wolves.k12.mo.us (cdillon@mail.wolves.k12.mo.us [207.160.214.1]) by mail.wolves.k12.mo.us (8.9.3/8.9.3) with ESMTP id NAA66997; Fri, 17 Aug 2001 13:57:51 -0500 (CDT) (envelope-from cdillon@wolves.k12.mo.us) Date: Fri, 17 Aug 2001 13:57:50 -0500 (CDT) From: Chris Dillon To: Tom Samplonius Cc: Shawn Ramsey , , Subject: Re: Moving between Mylex cards? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Fri, 17 Aug 2001, Tom Samplonius wrote: > > On Thu, 16 Aug 2001, Chris Dillon wrote: > > > On Thu, 16 Aug 2001, Shawn Ramsey wrote: > > > > > Has anyone ever moved a RAID config from say an AcceleRAID 150 to an > > > ExtremeRAID 1100 or 2000? I talked to Mylex and they say there _shouldn't_ > > > be a problem. With COD (configuration on disk) the RAID config should be > > > automatically recognized and work like before... > > > > > > > There is definately no problem if you're using a RAID1 (mirroring) > > array. You can even take a unit out of a RAID1 array and attach it to > > a standard SCSI controller and it will work fine. > > And you've done that? That will not work on most controllers, because > of the config on disk. It is stored on the beginning of each disk. > Since I can move disks from channel to channel and id to id, and the > controller still knows which physical disks belong to which logical disk > set, I would have to say that you are going to have a problem. Twice. Once with an AMI MegaRAID Enterprise 1200 along time ago, and once with a Mylex AcceleRAID 170 fairly recently. I'm not sure where the on-disk configuration is stored, but apparently it is someplace that doesn't affect things when attached to a standard controller. -- Chris Dillon - cdillon@wolves.k12.mo.us - cdillon@inter-linc.net FreeBSD: The fastest and most stable server OS on the planet - Available for IA32 (Intel x86) and Alpha architectures - IA64, PowerPC, UltraSPARC, and ARM architectures under development - http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message