From owner-freebsd-questions@FreeBSD.ORG  Thu Jul 21 07:19:54 2005
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To: "Norberto Meijome" <freebsd@meijome.net>,
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Date: Thu, 21 Jul 2005 15:18:04 +0800
From: "Daniel Marsh" <daniel@stiw.org>
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Subject: Re: Bootstrapping Raid 5 w/GEOM
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On Thu, 21 Jul 2005 15:11:18 +0800, Norberto Meijome <freebsd@meijome.net>  
wrote:

> Hi all,
> I have a box with 4 x 120 GB EIDE drives which I want to convert to  
> FreeBSD 5.4 ( it's an old SNAP 4500 from Snap Appliance, now owned by  
> Adaptec, running a custom build of Linux)
>
> I want to setup software Raid 5 , and I want it to affect ALL  
> partitions, including / (so if any one of the drives fails, it will  
> still boot up properly). I am planning on using GEOM, but open to  
> suggestions.
>
> I've been searching and cant find any pointers on how to set this up  
> properly. I've been reading http://people.freebsd.org/~rse/mirror/ , but  
> this is works for RAID 1.
>
> Could anyone offer any insights / ideas / pointers (or step by step if  
> you so feel inclined to :-) ) on how to set this up?
>
> Thanks in advance,
> Beto

See gmirror and geom.
http://www.freebsd.org/cgi/man.cgi?query=gmirror&apropos=0&sektion=0&manpath=FreeBSD+5.4-RELEASE+and+Ports&format=html

http://www.freebsd.org/cgi/man.cgi?query=geom&apropos=0&sektion=0&manpath=FreeBSD+5.4-RELEASE+and+Ports&format=html