From: Abdellah Djebli (abdellah.djebli@SICKKIDS.CA)
Date: Wed Jan 28 2004 - 09:11:43 EST
Very good point Holger. Our P650 has the same configuration as yours and
both hdisk0 and hdisk1 are on
the same controller, I wonder why. If you ever find out, could you share
with list. Although I just think that the people
at the assembly plant do not take the time to think about optimum
configuration.
Abdu
Holger.VanKoll@SW
ISSCOM.COM To: aix-l@princeton.edu
Sent by: IBM AIX cc:
Discussion List Subject: p650 internal disks
<aix-l@princeton.
edu>
01/28/2004 08:22
AM
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Hello,
a p650 has 2 internal scsi-controller.
I noticed that on all of my p650 the 2 internal disks (rootvg) are
connected to the same controller. Nothing is connected to the 2nd
controller.
If there are external (non ssa, non san) disks, there is a 3rd and 4th
scsi-controller to which the disks are connected to.
I see no point in connecting both rootvg-disks to the same controller as
long there is an unused 2nd controller; neither regarding availability nor
performance.
But I dont know if this setup is shipped from IBM like this or if it is
done somewhere @ ibm in my country.
So, could you please tell me if your p650 have the same setup?
If anybody got an idea about any advantage with this setup, please let me
know.
Regards,
Holger
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