IBMi.org – Bart's blog

IBM i and PowerVM features and tools

Category Archives: IBM i

Recovering an invalided Load Source disk

As I wrote in the previous post, there might a situation when another/former load source disk become part of the LPAR configuration. IBMi OS configuration allows to run only with one valid load source, therefore the operating system will change a specific sector, making a former load source disk a regular disk. Therefore, this disk can’t be used as the Load Source never again. In this post I will describe what sector need to be changed in order to recover the disk, and reuse it in another configuration.

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IBMi – Copy the load-source disk FAQ

Process for copying the load source disk is sort of a black box. The copying process is straight forward, but there is no documentation ‘what if’. My assumption is because this is very sensitive operation, IBM does not want us to meddle with the process. I’ve created sort of summary for admins based on my experience ,and research made over hundreds copying processes.  I bet you won’t get this information thru any official channel.

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IBM iDoctor for beginners

I want to introduce IBM iDoctor tool to people who does not know it. Few years ago, I didn’t know the tool either, and I’ve heard lot of wired stories what the aim is. These days, I can’t live without it, and every single serious performance analysis starts with the tool. I want to show you in very simple steps how to do a basic analysis. Not sure if you know, but the tool is available with 45-days free trial. So, you can give a try without paying a single penny, or ordering an expensive consultant. Read more of this post

IBMi – copy the loadsource to a smaller disk

Me and many other technicians hate the limitation that the only supported way of migrating the Loadsource disk to a smaller LUN is save/restore IBMi OS. With the method described below, I was able to copy the Loadsource to the smaller disk, and it worked. Read more of this post

How to check LUN properties delivered to IBMi

Have you ever wonder if a LUN delivered from an external storage to your IBMi Lpar is thin provisioned,encrypted or provisioned thru SSD, you can do it from IBMi. Read below about hidden SST macro.

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(Updated) Meltdown & Spectre performance impact on IBMi and IBM Power Systems

Not sure if there is anyone in IT world who has not heard about latest vulnerabilities in the modern chips. In this post I cover performance impact caused by fixes on IBM Power Systems and and IBM i OS.

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IBM TechU Prague 2017 – finally as a speaker

Finally this is happening! After all these years I’ve been given an opportunity to speak, present, teach others about technologies where I find myself very confident and have experience which should be shared among the community. I will be a speaker at IBM Technical University

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Administrative Domains on IBMi – PowerHA

I would like to share my experience from implementing and configuring the feature of PowerHA – The Administrative Domains. This functionality allows synchronization of specific objects stored on the SYSBAS. It should be used in conjunction with an iASP based solution. Thus, if you don’t use the iASP, you will not find the Administrative Domain useful.

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IBM give away BRMS, POWERHA and RDi to HelpSystems

I just came back from vacation and I’m shocked with the information that the development of key IBM i products: BRMS, PowerHA for i, IBM Rational Developer for i (RDi) and L3 support are moved to HelpSystems.

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HP StoreOnce VTL and IBMi

Few weeks ago I had a chance to test VTL functionality on StoreOnce devices in conjunction with IBM i. HP StoreOnce is pretty new product and I know that a lot of people is waiting for some information ‘from the field’. This is my short summary.

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