Date: Fri, 17 Aug 2001 19:00:55 +0200 From: Wilko Bulte <wkb@freebie.xs4all.nl> To: "Kenneth D. Merry" <ken@kdm.org> Cc: Tom Samplonius <tom@sdf.com>, Chris Dillon <cdillon@wolves.k12.mo.us>, Shawn Ramsey <shawn@cpl.net>, questions@FreeBSD.ORG, scsi@FreeBSD.ORG Subject: Re: Moving between Mylex cards? Message-ID: <20010817190055.A4706@freebie.xs4all.nl> In-Reply-To: <20010817104411.A46409@panzer.kdm.org>; from ken@kdm.org on Fri, Aug 17, 2001 at 10:44:11AM -0600 References: <Pine.BSF.4.32.0108161904200.57368-100000@mail.wolves.k12.mo.us> <Pine.BSF.4.05.10108170904400.5484-100000@misery.sdf.com> <20010817104411.A46409@panzer.kdm.org>
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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-questions" in the body of the message
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