Category: AIX
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Tech tip: finding AIX’s save buttons
If there’s one thing that I will never get used to about Google Docs, it is that it doesn’t save your changes. Or rather, it does it for you. Well, Mr Google, I want the “save” button back. Even if it doesn’t do anything. There is something very consoling about a save button. It’s closure.…
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AIX tech tip: Bye-bye loops – use the ‘apply’ command instead
One of the best kept secrets of the AIX command line is the “apply” command. Never heard of it? Well, welcome to the club. Two colleagues and I had over 60 years’ combined experience on AIX and, between us, we had never once come across “apply”. So, what does it do and why should you…
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Are you using the correct disk driver for your Storwize storage?
With so many customers now using Storwize and SVC storage in their Power environment with VIOS, it is important that we get the configuration of the system correct and supported. In the last few months, I have been involved with customers who already have their Power and Storwize systems up and running. Something I’ve found…
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AIX tech tip: Userproof your scripts, or else…
It must be the techie in me, but I don’t like to make arrangements to meet someone without having a backup plan. What if they don’t make it on time? What if I don’t? I know what you’re thinking: call their mobile. But do I have their mobile number handy? Will we have coverage? Will…
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AIX tech tip: a tribute to AIX devices
When you have a device connected to AIX, such as a disk or a tape drive, you can discover it using cfgmgr. As you’d expect, it will have the default parameters that are used for the device driver. Sometimes you’ll want to change these parameters – usually to allow you to tune the device for…
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How to use the SVC/Storwize CLI
Over the last five years, I have worked with both SVC and the Storwize Vxxxx family of products with IBM i and AIX on Power Systems. SVC and Storwize share the same software stack and GUI. There are some functions which are only available in SVC but, predominantly, the configuration and management is the same.…
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AIX tech tip: How to scan new devices with a single command
There are things I really love about virtualisation for Power Systems. I probably appreciate some things more than other people do because I got to see how things used to work many years ago. A combination of physical and virtual enhancements has made life a lot easier than it used to be. I remember when…
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Masterclass: advanced vSCSI disk monitoring (includes scripts)
In my previous article, I showed how you can use nmon in VIOS to display the performance statistics of hdisks that are mapped to client LPARs. This is achieved by creating a file which nmon reads and then displays the relevant performance data. The script I used required that the virtual target devices (VTDs) mapped…
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Masterclass: how to monitor VIOS vSCSI disk performance
In my previous article I showed how you can use nmon in VIOS to display the performance statistics of hdisks that are mapped to client LPARs. This is achieved by creating a file which nmon reads and then displays the relevant performance data. Let’s look at a script I created to automatically generate the file…
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Is the new HMC interface enhanced or not?
IBM has rather quietly brought out a new interface to its Hardware Management Console (HMC). This became an option in V8R8.1 Service Pack1 of the HMC. IBM has called it the enhanced interface and you will have an option to select it at log in. Don’t worry, you’ll know it when you see it. Before…
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AIX tech tip: which HMC does this LPAR belong to?
In a large Power environment where you have multiple Power Systems and perhaps hundreds of LPARs, there may well be multiple Hardware Management Consoles. When the environment is spread across several sites, it can be a challenge even identifying which HMC to log onto to manage a particular LPAR. I recently had this situation. I…
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Time-saving tips for AIX device configuration
When you have a one-off command to run on AIX, you just type it in. If you have to do it hundreds of times, you are better off if you script it. But what if the scripting still isn’t fast enough? I recently had to remove hundreds of virtual SCSI (vSCSI) devices from a Virtual…