Date: Fri, 3 Aug 2007 14:44:04 +0400
From: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
To: Manu Abraham <abraham.manu@gmail.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
       linux-fsdevel@vger.kernel.org
Subject: Re: Distributed storage.
Message-ID: <20070803104403.GD10089@2ka.mipt.ru>
References: <20070731171347.GA14267@2ka.mipt.ru> <1a297b360708022204u4fc7603pb6baebe2bdf28618@mail.gmail.com>
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Hi.

On Fri, Aug 03, 2007 at 09:04:51AM +0400, Manu Abraham (abraham.manu@gmail.com) wrote:
> On 7/31/07, Evgeniy Polyakov <johnpol@2ka.mipt.ru> wrote:
> 
> > TODO list currently includes following main items:
> >     * redundancy algorithm (drop me a request of your own, but it is highly
> >         unlikley that Reed-Solomon based will ever be used - it is too slow
> >         for distributed RAID, I consider WEAVER codes)
> 
> 
> LDPC codes[1][2] have been replacing Turbo code[3] with regards to
> communication links and we have been seeing that transition. (maybe
> helpful, came to mind seeing the mention of Turbo code) Don't know how
> weaver compares to LDPC, though found some comparisons [4][5] But
> looking at fault tolerance figures, i guess Weaver is much better.
> 
> [1] http://www.ldpc-codes.com/
> [2] http://portal.acm.org/citation.cfm?id=1240497
> [3] http://en.wikipedia.org/wiki/Turbo_code
> [4] http://domino.research.ibm.com/library/cyberdig.nsf/papers/BD559022A190D41C85257212006CEC11/$File/rj10391.pdf
> [5] http://hplabs.hp.com/personal/Jay_Wylie/publications/wylie_dsn2007.pdf

Great thanks for this links, I will definitely study them.

-- 
	Evgeniy Polyakov
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