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Date: Thu, 6 Sep 2012 19:03:54 -0500 (CDT)
From: Bob Friesenhahn <bfriesen@simple.dallas.tx.us>
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To: Andy Young <ayoung@mosaicarchive.com>
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Cc: freebsd-fs@freebsd.org
Subject: Re: Question on ZFS and redundancy
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On Thu, 6 Sep 2012, Andy Young wrote:
>
> Now with ZFS and raidz2 I love the fact that I can use a single pool to
> spread data across multiple vdevs. However, the vdevs aren't independent
> anymore right? Because ZFS stripes data across the vdevs, if I lose three
> drives in a single vdev, doesn't this put the entire pool at risk?

Yes.  It is a bigger basket.  If you need a stronger basket, consider 
raidz3 and/or pay close attention to the physical layout and 
connectivity of the drives so that there is the least opportunity for 
the drives to share the same problem.

Bob
-- 
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/