× The internal search function is temporarily non-functional. The current search engine is no longer viable and we are researching alternatives.
As a stop gap measure, we are using Google's custom search engine service.
If you know of an easy to use, open source, search engine ... please contact support@midrange.com.



VIOS to SAN disk absolutely. Only way to fly.

VIOS on Internal disk though hosting IBM i or frankly anything is still on my naughty list. THE number one issue is the lack of knowledge on that both from the IBM Hardware group as well as the support center.

We have had multiple times where the customer lost EVERYTHING because support directed local CEs to do things they should not have done. In addition most IBM i only shops cannot spell VIOS or AIX and as a consequence they NEVER update the VIOS partitions or the firmware of the devices said partitions own. Thus landmines are buried.

Honestly though if you have many TB of disk why NOT SAN?


- Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 11/22/2017 10:16 AM, Jim Oberholtzer wrote:
I might also offer that if you are architecting a new solution and more than
two hosted partitions are planned, you should really look into using VIOS to
perform the virtualization. VIOS offers several advantages to IBM i hosting
IBM i, chief among them are you're not burning IBM i licensing to perform
the hosting. Virtualizing fibre attached tape is a breeze as well.

If you use the vSCSI drives with local storage there are a couple of tuning
things you need to do in VIOS for I/O blocking etc, but that is all well
documented.

Geesh, I never thought I would ever post something nice about VIOS but, then
again, it's true. We use it quite a bit.


--
Jim Oberholtzer
Agile Technology Architects

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Steinmetz, Paul
Sent: Wednesday, November 22, 2017 8:55 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: i hosting i question

+1
I/O hosting much improved with SSD drives.
I have a Production SSD LPAR hosting only some I/O to R&D LPAR for some
improved R&D performance, no issues.
The R&D LPAR has its own dedicated CPU and memory.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim
Oberholtzer
Sent: Wednesday, November 22, 2017 9:35 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: i hosting i question

There is some truth to that statement, but of course, "it depends".

Usually it's because the host system I/O becomes the bottleneck with large
partitions. We have several 7TB and 8TB partitions at customers that are
hosted, but we have carefully monitored the I/O on the host system and
ensured that it has plenty of memory and CPU. Watch disk unit busy
percentage on the host system. If that gets too high (>20%) then all the
virtualized systems suffer.

Remember CPU is needed to manage the virtualization and most folks get too
skinny on that part. Don't worry that the percent of CPU is near zero most
of the time, the virtualization CPU usage does not really show on the
WRKSYSSTS display. We use WRYSYSACT to find the virtualization jobs and
monitor them.


--
Jim Oberholtzer
Agile Technology Architects

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Tom
Duncan
Sent: Tuesday, November 21, 2017 4:06 PM
To: Midrange Systems Technical Discussion
Subject: i hosting i question

I just had someone tell me that IBM does not recommend using i hosting i if
the amount of disk is over 3 or 4 Tbytes for performance reasons. Is anyone
aware of or even heard of this ?
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe,
or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a
moment to review the archives at https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related questions.

Help support midrange.com by shopping at amazon.com with our affiliate link:
http://amzn.to/2dEadiD

--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe,
or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a
moment to review the archives at https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related questions.

Help support midrange.com by shopping at amazon.com with our affiliate link:
http://amzn.to/2dEadiD
--
This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list
To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe,
or change list options,
visit: https://lists.midrange.com/mailman/listinfo/midrange-l
or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a
moment to review the archives at https://archive.midrange.com/midrange-l.

Please contact support@xxxxxxxxxxxx for any subscription related questions.

Help support midrange.com by shopping at amazon.com with our affiliate link:
http://amzn.to/2dEadiD


As an Amazon Associate we earn from qualifying purchases.

This thread ...

Follow-Ups:
Replies:

Follow On AppleNews
Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.