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Date:      Mon, 7 May 2001 09:21:33 -0700 (PDT)
From:      Linh Pham <lplist@closedsrc.org>
To:        Bob Greene <rgreene@tclme.org>
Cc:        Greg Lehey <grog@lemis.com>, "Andrew C. Hornback" <hornback@wireco.net>, Steve Blanzy <sblanzy@aperion.com>, FreeBSD Questions <questions@FreeBSD.ORG>
Subject:   Re: Raid
Message-ID:  <Pine.BSF.4.33.0105070917330.97088-100000@q.closedsrc.org>
In-Reply-To: <3AF6CCDB.F1029665@tclme.org>

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On 2001-05-07, Bob Greene scribbled:

# Well, you wrote the book; I've only read it.  Is this a vinum specific
# performance penalty?

I think the performance penalty affects almost every RAID 5 array, since
you have to update the ECC data on all of the remaining drives so that
the entire file system is still accessible.

If I remember correctly... you can still have all your data as long as
no more than one drive were to fail in a single array at any given time.
To unmangle that... if you lost one drive already and another one
fails... I think your screwed.

-- 
Linh Pham
[lplist@closedsrc.org]

// 404b - Brain not found


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