IBM i – Where business applications runs best

For a long period of time, many saw IBM i and its predecessors as old fashioned systems. The number one reason for this was the old school 5250/Green Screen user interface. Number two on that list was monolithic applications written in old school RPG language . I have some thoughts about this later in the article..

What is very modern though is such things as:

  • In memory technologies (since 1970-s on IBM i)
  • Object based operating system (Unique implementation in IBM i)
  • Reliability, Availability, Security, Scalability, Serviceability – (It’s all there in IBM Power which is the server IBM i runs on)
  • Isolation of programs (no, you don’t need containers for this. Similar functions built into IBM i since the time of AS/400)
  • Operating system that was aimed for multiple users at the same time (IBM i was, Windows and Linux wasn’t)
  • Branching instead of time sharing operating system (Unique to IBM i and why 80% of all customer are using just 1 or 2 CPU/Cores)
  • Highly integrated relational database into the Operating System, not an application on top of it.. (Unique to IBM i)
  • Single level storage… (The data is there for you, when you need it. No need to search for it..)
  • Openness (IBM i is one of the most open system available on the market today)

Coming back to the reasons why IBM i is seen as un-modern. To start with, 5250 (Green Screens) is not always bad. They are sometimes actually very good. Not as primary way to interact with a business application, for sure. But just like with Windows or Linux, you need something more efficient than a GUI when it comes to do things “under the hood”. And compared to windows and linux terminal, 5250 kicks ass.

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Secondly, monolithic applications is not the hottest thing these days. Sure, there are some draw backs with them. But there was also a reason why they were written like that a long time ago. Performance…

The good news though is that you can migrate your monolithic into REST based web services and still stay on the platform. And if you still are stuck with old school RPG, there are convert tools out there to make the code look just like Java or .NET for example..

Sure, there is still the thing called vendor locked in choosing IBM i. But you don’t get away from that which path you choose you follow. The only thing I can promise that this vendor is one you want to be locked in with..

The good thing though, is that IBM i allows you to create smaller chunks of programs just like on any other platforms. Rest based web services works very well today.

IBM Power Resource Center

Are you looking for content to your own presentation or article around IBM Power Systems? One issue is to find good information as source to the text. Here you can at least find some things to start with.


2021 IBM Power Systems ISV Marketing Toolkit

IBM Power Systems

Power Systems website

ITIC 2020 Gobal Server Hardware, Server OS Reliability report

Navigating your hybrid multi cloud vision with IBM Power Systems


IBM i Website

IBM i Strategy and Roadmap (From 2020)

IDC Whitepaper: IDC discusses the benefits of IBM i 7.4

IBM i Technology Updates

IBM i Customer Stories

Forrester – The Total Economic Impact Of IBM i


AIX Website

AIX strategy and roadmap (From 2019)

AIX running on IBM POWER9 is a winning combination for your business

Modernizing your mission-criticalworkloads with AIX on IBM PowerSystems

AIX IDC: “The Importance of the Operating System When Modernizing on Hybrid multicloud”

Open Source

IBM Over all strategy around Open Source

IBM Open Source Support

Power vs x86

Open Power Foundation

Other sources

Why Power Systmes will overtake x86 server in the in-memory database marketplace


IBM on Flickr (not updated)

IBM Power Family Tree

Webinar – Container Technologies Explained


There is a lot of talk around different container technologies in the IT industry today. But what is this really all about?
Please join us in this webinar where Patrik Gunnersten from Conoa (the leading container technologies company in the Nordics) explains containers so even your parents can understand it..

Date: January 28th

Time: 14.00 Central European Time


  • What is a container and how do they differ from an traditional “monolithic” application.
  • How does containers affect your IT platform, organization and strategy
  • A short introduction to the ecosystem around containers, this is a whole new world
  • What is and what isn’t Kubernetes
  • Containers on IBM Power Systems
  • Questions & Answers


Patrik Gunnersten

Business Area Manager @Conoa AB
Previous IBM Power Expert for 16 years working for IBM. Since 2017 he is an expert on Deep Learning, GPU, Containers and Open Source working for Conoa in Sweden


Torbjörn Appehl BIO

Torbjörn Appehl started his IT-career in 1997 as a customer engineer and later country specialist for AS/400 hardware employed by IBM Sweden. Later he became program manager for the BCRS (Business Continuity and Recovery/Resiliency Services) center, building High Availability and Disaster Recovery solutions for IBM i customers in Sweden.

After leaving IBM in 2008 he worked for a number of business partners including Atea, TietoEvry, and CGI. He also worked with Arcad Software to bolster their business in the Nordics.

In 2020 Torbjörn founded the IT advisory company Built on Power.

He was a board member for 10+ years and the President for 7 years of the Swedish User Group Common Sweden (Formerly known as Data3). In addition he was also a member of the Common Europe Executive Committee for 3 years.

Besides this he started, a networking website where IBM i experts and community members can promote their services.

In 2016 Torbjörn was recognized as an IBM Champion for IBM Power Systems after being nominated by IBM staff in Rochester and Austin.

He has organized a number of large conferences such as Common Sweden Fall conference (It grew from 80 to over 200 participants), arranged Common Europe Congress in Sweden 2016 with over 300 participants and later helped arrange CEC in Brussels, Warsaw and Berlin.

As a speaker at conferences around the world he presents topics such as:

  • IBM i Explained (IBM i for beginners)
  • Why replacing an ERP and leaving the platform often is a very bad idea
  • How to keep yourself updated
  • IBM i from 1962 until today
  • 400 Arguments for IBM i and IBM Power Systems
  • 60 things IBM i has that other platforms just dreams about
  • Latest announcements, new and well hidden functions in IBM i & technologies you should at least know about by 2021.. (A bit to long title, i know :))

Torbjörn has written a number of blogposts and articles (To be found HERE)

Linkedin Profile:

Twitter Account:

From IBM Magazine: Torbjörn Appehl Reflects on His 24 Years’ IT Experience

IBM Magazine Snapshot (same as above)

From IBM Magazine: How Clients Are Using Regulations to Springboard Organizational Change