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Date: Tue, 19 Apr 2016 15:35:48 -0500 (CDT)
Subject: Re: Raid 1+0
From: "Valeri Galtsev" <galtsev@kicp.uchicago.edu>
To: "Steve O'Hara-Smith" <steve@sohara.org>
Cc: freebsd-questions@freebsd.org,
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On Tue, April 19, 2016 9:38 am, Steve O'Hara-Smith wrote:
> On Mon, 18 Apr 2016 17:05:22 -0500 (CDT)
> "Valeri Galtsev" <galtsev@kicp.uchicago.edu> wrote:
>
>> Not correct. First of all, in most of the cases, failure of each of the
>> drives are independent events
>
> 	If only that were so. When the drives are as near identical as
> manufacturing can make them and have had very similar histories they can
> be
> expected to have very similar wear and be similarly close to failure at
> all
> times, which makes it likely that the load imposed by one failing will
> push
> another over.

Sigh. You need suggest some physics that will make one drive affect
another (aged or not aged doesn't matter for me). Then you will have me in
your team.

Valeri

>
> --
> Steve O'Hara-Smith <steve@sohara.org>
>


++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++