Re: Parity Set Configuration Advice

[Jeff Kennedy <jkennedy@xxxxxxxxxxxxx>]

We configured all our 18 (35 gig ) drives in a single parity set. The 
system choose that at install time and the CE concurred. The performance 
is great. We are running on an 810, 1020 CPW.

ChadB@xxxxxxxxxxxxxxxxxxxx wrote:

> Hello all... been reading forever and am posting the first time...
>
> We will have 6 of the 36gb 15k RPM drives setup on a 2757 controller.  I'm
> trying to decide what would be the 'best' way to configure them in terms of
> parity sets.  Can anyone help me with the decision?  I'm picturing either 6
> drives in a single parity set, or 2 parity sets of 3 drives each.  I'm
> interested in getting some thoughts on which setup makes more sense in
> terms of protection and performance.  I know that by setting them up as 2
> parity sets of 3 drives we will lose more capacity, but I want to get some
> feeling for how much additional performance or protection that setup might
> offer compared to the 6 drives in one set.   Can anyone offer any further
> advice?
>
> The system is a 950cpw Model 800 that runs a single Domino workload (200
> users max) and a Websphere workload.
>
> Thanks for the help...
>
>
> Chad Burrall
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> AS/400 Administrator
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> Wheeling-Nisshin, Inc.
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