Dynamic Platform Optimizer is a hypervisor function which rearranges logical partition processors and memory on the system to improve the affinity between processors, and memory of logical partitions. In this post I will describe when to use this function and how to prevent IBM i Lpar from crash. Continue reading “IBM i lpar crashed duo to Dynamic Platform Optimizer”
Category: IBM i
Perform a command across multiple IBM i systems
There is a very simple how to submit any IBM i command across multiple systems. The main requirement for it is the Management Central. Continue reading “Perform a command across multiple IBM i systems”
how to get ip address from hostname in CL (IBM i)
Today, I was preparing another program for automation. I need a function to retrieve an IP address of a remote system from the DNS having the system hostname. In the interactive session, you’d simple use ping or nslookup commands to resolve the hostname. But none of these commands can store the result into a variable. I did a short research, and there is very cool command Start DIG Query (DIG). This command can be used in a program, and it’s very easy get an IP address. Here is the example of a simple CL:
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IBM i with VLAN tagged network
Have you ever think to run your IBM i machine with in IEEE 802.1Q standard, and use the capabilities which offers VLAN tagging? You might heard that your AIX, LINUX colleagues already use it for ages, but for IBM i, this technology is still not available. Well, it is possible! You can trunk multiple VLANs to one physical port, if you configure the POWER Hypervisor to handle this traffic. Continue reading “IBM i with VLAN tagged network”
Redbook residency – Austin 2014
Few days ago, I came back from IBM in Austin. It was my first time in Austin, homeland of POWER systems, chips, AIX and PowerVM development, but third residency in general. Continue reading “Redbook residency – Austin 2014”
Monitor CPU, POOL utilization from PHYP cycles
It’s important to know a CPU capacity used by a system. In IBM i world, we have a licpgm – 5761PT1 Performance tools. But what if you run other OS’s than IBM i, on the same POWER box. Or you run LPARs in different shared processor pools ? The most efficient might be tracking CPU cycles dispatched by the POWER Hypervisor. In this post I show you, how to interpret performance data collected by a HMC, and how to allow IBM i collects and display dispatched CPU cycles.
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Live Partition Mobility on IBM i – step by step
It’s pretty new feature on IBM i, for AIX its availably since 2007. In VMware world its called VMotion. In my opinion it is still not very popular. Software vendors must still adopt their software for seamless migrations. But IBM gave us a technology which works very well.
Continue reading “Live Partition Mobility on IBM i – step by step”
VIOS commands from IBM i point of view
Many IBM i administrators do afraid a VIOS shell. Yes, its different, completely different what we know from IBM i interface. In this post I want to show you a few commands which you know from a ‘green screen’ against its equivalent in a VIOS shell.
IBM i with external storage – support matrix
If you wonder what external storage can be directly attached to an IBM i, please check a document at the bottom. Continue reading “IBM i with external storage – support matrix”
PTF installation from a central system
How to perform PTF installation from a single partition across multiple systems? Let me present a solution based on IBM i functions. This solution avoids copying iso images/image catalogs to multiple LPARS. Continue reading “PTF installation from a central system”
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