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From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Matthew Seaman <matthew@freebsd.org>
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Cc: freebsd-questions@freebsd.org, Fred Morcos <fred.morcos@gmail.com>,
	Walter Hurry <walterhurry@gmail.com>
Subject: Re: New to FreeBSD - Some questions
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> +-------------------------------+
> |            Stripe             |
> +---------------+---------------+
> |    Mirror1    |    Mirror2    |
> +-------+-------+-------+-------+
> | Disk1 | Disk2 | Disk3 | Disk4 |
> +-------+-------+-------+-------+
true.
but there are mirror/stripe layout that is quite better in performance 
than yours where writes are not dominant ;)