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Date:      Fri, 3 Jun 2005 18:36:34 -0400
From:      Alec Berryman <alec@thened.net>
To:        freebsd-stable@freebsd.org
Subject:   Re: RAID-1 as back-up
Message-ID:  <20050603223634.GA13927@thened.net>
In-Reply-To: <20050603222620.GA708@hiMolde.no>
References:  <20050603222620.GA708@hiMolde.no>

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Hans F. Nordhaug on 2005-06-04 00:26:20 +0200:

> I would like to use RAID-1 as a back-up solution. If one of the disk
> breaks I would like my server to continue to run from the other
> disk.

Just as fair warning, you should not rely on RAID as a 'backup' like
you would rely on writing to removable media and storing off-site.  If
someone cracks your computer and you want to go back to known good
snapshot, you're out of luck; if you accidently overwrite something,
RAID won't help you.

> I'm running 5.3 - what do you recommend - gvinum, ccd, others? What
> is the definitive howto for the recommend solution.

You should use gmirror.  There's an excellent guide -
http://people.freebsd.org/~rse/mirror/.  I've been using gmirror for
about half a year and have had no problems.

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