Re: RAID-3? (was: cvs commit: src MAINTAINERS)

From: Greg 'groggy' Lehey (grog_at_FreeBSD.org)
Date: 08/21/04

  • Next message: Pawel Jakub Dawidek: "Re: RAID-3? (was: cvs commit: src MAINTAINERS)" 
    Date: Sat, 21 Aug 2004 18:02:07 +0930
To: Pawel Jakub Dawidek <pjd@FreeBSD.org>

    On Saturday, 21 August 2004 at 10:06:14 +0200, Pawel Jakub Dawidek wrote:
    > So as you can see there are no difference in reading (actually
    > reading in degraded mode is even a bit faster, hard to say why).

    I would have half expected this. If you're reading parity as well,
    then without spindle sync it will take longer for three I/Os to
    complete than 2. In a fractionally different context, I describe a
    similar result for RAID-5 at
    http://www.vinumvm.org/vinum/implementation.html.

    Greg 

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  • Next message: Pawel Jakub Dawidek: "Re: RAID-3? (was: cvs commit: src MAINTAINERS)"

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