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Date:      Thu, 5 Feb 1998 08:52:09 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Doug White <dwhite@resnet.uoregon.edu>
Cc:        Michael Haro <perl@netmug.org>, freebsd-questions@FreeBSD.ORG
Subject:   Re: ccd mirroring
Message-ID:  <19980205085209.55263@lemis.com>
In-Reply-To: <Pine.BSF.3.96.980204123341.15689H-100000@gdi.uoregon.edu>; from Doug White on Wed, Feb 04, 1998 at 12:36:02PM -0800
References:  <Pine.BSF.3.96.980203210930.12681A-100000@netmug.org> <Pine.BSF.3.96.980204123341.15689H-100000@gdi.uoregon.edu>

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On Wed, Feb 04, 1998 at 12:36:02PM -0800, Doug White wrote:
> On Tue, 3 Feb 1998, Michael Haro wrote:
>
>> I was reading about ccd and how it can be used to mirror data kinda like
>> RAID level 1.
>>
>> If one of the drives crash, how would I remedy the crash?
>> The drives I currently have are different sizes, would this cause a
>> problem when using ccd?
>
> Yes, it's not permitted.  CCD must use homogenous disks.
>
> Recovering a mirrored disk involves bringing over a disklabel and fixing
> some other bits.  It's not a seamless recovery, but the data is still
> there.  I'm not familiar with the entire procedure but someone probably
> figured it out at some point and posted about it :)

I'm currently working on a replacement which will address all these
problems and then some.

Greg



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