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Date:      Tue, 17 Nov 2009 15:03:57 -0600
From:      Adam Vande More <amvandemore@gmail.com>
To:        Modulok <modulok@gmail.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Wester Digital 'deep recovery cycle' and gstripe?
Message-ID:  <6201873e0911171303w2c37f1c3we928798a6760d393@mail.gmail.com>
In-Reply-To: <64c038660911171249r141cc810n62a721e48225954c@mail.gmail.com>
References:  <64c038660911171249r141cc810n62a721e48225954c@mail.gmail.com>

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On Tue, Nov 17, 2009 at 2:49 PM, Modulok <modulok@gmail.com> wrote:

> List,
>
> Has anyone used 'Wester Digital Caviar Black' disks in a gstripe?
>
> I'm building a 2TB gstripe, from 3x 1TB disks. My concern, is the
> disks are 'consumer grade' disks. Western Digital mention not to use
> them with a raid controller as they have a potential, 'deep recovery
> cycle', which an last up to 2 minutes. This would theoretically result
> in them being dropped from the array. Despite this, I've heard
> successful uses of these disks via gmirror. (Granted, not the same as
> gstripe). Again, in theory, if one disk enters a 'deep recovery cycle'
> and is dropped from the array, and during that time another disks does
> the same the array is toast, right?
>
> Umm...what are the odds of this occurring? War stories? (The more I
> type this out, the more it's starting to sound like a bad idea.)
> Thoughts, ideas?
> -Modulok-
>
> In a stripe, if one goes it all goes.  However I am not certain it's an
issue in your case, the gstripe labeling mode with create a persistent
config.  If there's not a better answer, best thing to do would be to test
it out.  setting up gstripe takes like 10 minutes.


-- 
Adam Vande More



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