From owner-freebsd-scsi Fri Aug 17 10: 1:14 2001 Delivered-To: freebsd-scsi@freebsd.org Received: from smtp9.xs4all.nl (smtp9.xs4all.nl [194.109.127.135]) by hub.freebsd.org (Postfix) with ESMTP id C4B0837B40D; Fri, 17 Aug 2001 10:01:02 -0700 (PDT) (envelope-from wkb@freebie.xs4all.nl) Received: from freebie.xs4all.nl (freebie.xs4all.nl [213.84.32.253]) by smtp9.xs4all.nl (8.9.3/8.9.3) with ESMTP id TAA24286; Fri, 17 Aug 2001 19:00:55 +0200 (CEST) Received: (from wkb@localhost) by freebie.xs4all.nl (8.11.4/8.11.4) id f7HH0tn04735; Fri, 17 Aug 2001 19:00:55 +0200 (CEST) (envelope-from wkb) Date: Fri, 17 Aug 2001 19:00:55 +0200 From: Wilko Bulte To: "Kenneth D. Merry" Cc: Tom Samplonius , Chris Dillon , Shawn Ramsey , questions@FreeBSD.ORG, scsi@FreeBSD.ORG Subject: Re: Moving between Mylex cards? Message-ID: <20010817190055.A4706@freebie.xs4all.nl> References: <20010817104411.A46409@panzer.kdm.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010817104411.A46409@panzer.kdm.org>; from ken@kdm.org on Fri, Aug 17, 2001 at 10:44:11AM -0600 X-OS: FreeBSD 4.3-STABLE X-PGP: finger wilko@freebsd.org Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Fri, Aug 17, 2001 at 10:44:11AM -0600, Kenneth D. Merry wrote: > On Fri, Aug 17, 2001 at 09:06:52 -0700, 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. > > I wouldn't necessarily bet that most controllers have their configuration > at the beginning of the disk. The Adaptec smart raid (former DPT) > controllers put their configuration at the end of the disk. > > I don't know about other RAID controllers, though. DEC HSx's have it at the end. -- | / o / / _ Arnhem, The Netherlands email: wilko@FreeBSD.org |/|/ / / /( (_) Bulte To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message