RE: DIsk conversion question

This is a P720 LPAR with the disk drives from the EMC san

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jack Kingsley
Sent: Monday, May 21, 2012 11:25 AM
To: Midrange Systems Technical Discussion
Subject: Re: DIsk conversion question

Are you talking with I on I with LPAR's with the host owning the drives or a
EMC or DS8000 SAN or ??

On Mon, May 21, 2012 at 11:44 AM, <ldwopt@xxxxxxx> wrote:

I am confused when converting direct attach to a SAN system

Our old system was had 12 127 15k rpm drives. We converted to an
LPARed system with 3 Luns.
#1 572000M 7,200 rpm
#2 191000M 7,200 rpm
#3 763000M 7,200 rpm

I don't have the exact break down but there is supposed to be 60
drives allocated to the 3 luns.When we tried a test conversion this
past weekend a disk bottle neck occurred during part of the initial
start up when selected files were being reorged.

My thought on correcting the problem would be to:
1. Split the 3 luns into maybe 6 or more smaller units 2. Recreate the
luns using 15k drives 3. Recreate the drives into 6 luns with 15k
drives

Am on the correct track\?
Is there other option to consider?

TIA

Dave Willenborg
FNTS semi-retired
Omaha NE


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