[Summary] HSG80 & stripeset

From: Xavier Mertens <xavier_at_bru-noc.net>
Date: Wed, 16 Jan 2002 13:08:46 +0100 (CET)

Thanks to:
        Petr Marek
        Martin Petder
        Horvath, Zoltan
        Kevin McDonnell

DISK40300 and DISK40400 are on the same bus. Writing consecutive blocks on
those disks has to wait for complete the first (bus blocked)
-> Performance degradation

"In case you have to use stripeset bigger than from 6 disks do make sure
that it is built with disks in the same channel situated as away on the
stripeset as possible - as you have done in your configuration."

I created two smallers stripesets instead of a big one.

Xavier

--
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On Wed, 16 Jan 2002, Xavier wrote:
> 
> I created a new stripeset on a HSG80, and got the following warning:
> 
> HSG1-TOP> add stripeset NN1S disk30400 disk40400 disk50400 disk10300 disk20300 disk30300 disk40300 disk50300
> 
> Warning 3000: This storageset is configured with more than one disk per port.
>               This causes a degradation in performance, and a higher risk of
>               data inaccessibility.
> Other controller restarted
> HSG1-TOP> show stripeset
> 
> Name          Storageset                     Uses             Used by
> ------------------------------------------------------------------------------
> 
> NN1S          stripeset                      DISK10300        
>                                              DISK20300        
>                                              DISK30300        
>                                              DISK30400        
>                                              DISK40300        
>                                              DISK40400        
>                                              DISK50300        
>                                              DISK50400        
> 
> 
> Where can I find more info about this warning? It is a big degration in
> performance? 
> 
> Xavier
> 
> --
> http://www.rootshell.be
> echo '16i[q]sa[ln0=aln100%Pln100/snlbx]sb20293A2058554E494Csnlbxq'|dc
> 

Received on Wed Jan 16 2002 - 12:09:03 NZDT