Date: Fri, 17 Aug 2001 13:57:50 -0500 (CDT) From: Chris Dillon <cdillon@wolves.k12.mo.us> To: Tom Samplonius <tom@sdf.com> Cc: Shawn Ramsey <shawn@cpl.net>, <questions@FreeBSD.ORG>, <scsi@FreeBSD.ORG> Subject: Re: Moving between Mylex cards? Message-ID: <Pine.BSF.4.32.0108171356090.66943-100000@mail.wolves.k12.mo.us> In-Reply-To: <Pine.BSF.4.05.10108170904400.5484-100000@misery.sdf.com>
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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
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