Re: Number of network-server storage spaces per vSCSI Controller?

A single NWSD can have 64 storage spaces linked to it. After that you need another NWSD.

This guide, updated just this month, has lots of pretty graphs and charts that show the affect of multiple storage spaces, and multiple server descriptions. (Section 6.5)
http://www-03.ibm.com/systems/resources/systems_power_software_i_perfmgmt_pcrm_apr2012.pdf

Personally I haven't had the time to mess with large numbers of 'arms' (storage spaces) but according to the document, 8 is the magic number. (Note: Their chart doesn't go beyond 8 so maybe 16 would be better and they didn't try?) Pete often references the number 6 but I believe as a minimum, not the perfect number.

- Larry "DrFranken" Bolhuis


On 4/17/2012 9:58 AM, Kirk Goins wrote:

Yup Looking for MAX... Lets say just for 'fun' I have a JDE partition I
need to create.and JDE wants 48 arms... How many vSCSI Controllers should I
use?

On Tue, Apr 17, 2012 at 5:13 AM,<rob@xxxxxxxxx> wrote:

Good point Pete, but he was asking about Max.


Rob Berendt
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From: Pete Massiello - ML<pmassiello-ml@xxxxxxxxxxxx>
To: Midrange Systems Technical Discussion<midrange-l@xxxxxxxxxxxx>,
Date: 04/17/2012 08:00 AM
Subject: RE: Number of network-server storage spaces per vSCSI
Controller?
Sent by: midrange-l-bounces@xxxxxxxxxxxx



Yes, there certainly is. You should have at least 6 virtual disks per
hosted partition to get really good performance when hosting IBM I on IBM
i.

Pete

--
Pete Massiello
iTech Solutions
http://www.itechsol.com
IBM Champion




-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [
mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Kirk Goins
Sent: Tuesday, April 17, 2012 6:51 AM
To: Midrange-L
Subject: Number of network-server storage spaces per vSCSI Controller?

I am getting ready to configure a couple of IBM i on IBM i Guest
partitions today. I thought I had seen at one time a suggested /
recommended max number of storage spaces per vSCSI controller. Has anyone
seen or remember what that number is?

Thanks

--
Kirk
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