Re: Reed Solomon coding based Raid?

[Andrew Dunn <andrew.g.dunn@gmail.com>]

I have been toying with the idea of an open source project to achieve a 
more generalized functional spec. than what symform has created. I was 
thinking of calling it RAINcloud (redundant array of independent nodes)

I started drawing up the requirements over the holiday weekend.

Peter Chacko wrote:
> symform, a startup create 32 parity stipes of 64 original stripes, and
> distribute the fragments in different geographies.
>
> they call it, RAID-96 And apparently reed-solomon coded.
>
> http://www.symform.com/features-benefits.aspx
>
> thanks
>
> On Sat, Nov 28, 2009 at 9:18 PM, Kasper Sandberg <postmaster@metanurb.dk> wrote:
>   
>> As far as i know, theres not support for this, however, i do believe
>> raid6 uses reed-solomon.
>>
>> On Sat, 2009-11-28 at 16:15 +0100, John Hendrikx wrote:
>>     
>>> I was wondering if there is support for a raid level where one can
>>> choose the redundancy level.  Raid 5 allows for one redundant drive,
>>> Raid 6 for two, but there's no raid level that would support arbitrary
>>> redundancy (even to the point of allowing one to add extra redundancy
>>> later on, by simply putting spare drives to immediate use).
>>>
>>> I'm just a casual Software Raid user, and have been using Raid 6 for a
>>> small 8 TB array for a few years now and I realize that there's quite
>>> some CPU overhead involved for such redundancy, but for my purposes
>>> speed is not a relevant concern (10 MB/sec is enough).
>>>
>>> --John
>>>
>>>
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>   

-- 
Andrew Dunn
http://agdunn.net