Date: Fri, 17 Aug 2001 10:44:11 -0600 From: "Kenneth D. Merry" <ken@kdm.org> To: Tom Samplonius <tom@sdf.com> Cc: 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: <20010817104411.A46409@panzer.kdm.org> In-Reply-To: <Pine.BSF.4.05.10108170904400.5484-100000@misery.sdf.com>; from tom@sdf.com on Fri, Aug 17, 2001 at 09:06:52AM -0700 References: <Pine.BSF.4.32.0108161904200.57368-100000@mail.wolves.k12.mo.us> <Pine.BSF.4.05.10108170904400.5484-100000@misery.sdf.com>
next in thread | previous in thread | raw e-mail | index | archive | help
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. Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010817104411.A46409>