AIXpert Blog is about the AIX operating system from IBM running on POWER based machines called Power Systems and software related to it like IBM Systems Director, PowerVM for virtualisation and PowerSC for security plus performance monitoring and nmon
I have long thought it is rather silly that IBM Systems Director can't give you a list the licenses that you should have! It does, after all, know what machines it is controlling and the data is in the database. Perhaps, that will come in the future. What can we do in the short term? Generally, I like to do everything from the graphical user interface (GUI) . I have not got time to learn and use both GUI and CLI. The system configuration data can be extracted using the command line interface (CLI) on the Systems Director server, so I spent... [More]
Be sure you order the correct Hardware Management Console to match the code you plan to run. The 7042 machine type is for HMCs running Version 7. This Licensed Internal Code is a requirement for managing POWER6 servers, such as the 9117-MMA. However, it will also support POWER5 and POWER5+ managed servers. The 7310 machine type is for HMCs running Version 6. You cannot manage a POWER6 server using this HMC code. It is for POWER5 and POWER5+ managed servers only. Many 7310 HMCs can be upgraded in the field to support HMC V7 Release 3 code. ... [More]
If you are running Systems Director and upgrading to the new version ... WATCH OUT !! Make sure you have 1 GB free space in /var Make sure you have 2 GB free space in /tmp I did not, this upgrade script does not check for free space and it crashed during the Systems Director updating itself (/tmp 100% full) and it never came back. I ended up with a corrupt Systems Director. The smart guys would (before the upgrade) also stopped Systems Director (smstop) and saved the database (smsave) before attempting the upgrade - so the older version... [More]
Ravi Singh has updated his excellent "AIX Facts and Features" to include the new AIX6 functions. He has also expanded it to include VIO and HMC. http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/TD103130
five years ago on January 21, 1986, IBM Austin launched a new operating system
called IBM RT Personal Computer A dvanced I nteractive e X ecutive
-- better known as AIX-- with a new system called the IBM RT
PC. The system ran on a RISC processor codenamed “ROMP” (for Research Office
Products Division MultiProcessor) and was originally marketed as an engineering
the RT was an unremarkable hardware platform it did represent the first time
that IBM really started to get serious about UNIX (AIX version 1 was... [More]
I ran this session at the Las Vegas Technical University last week twice. I spend 5 minutes on each of the ten covering the basic concept and the "pro's and con's" then get the audience to vote on their top four. The smaller room took 105 people and the second time in a larger room to 187. It was a BIG conference with 1500+ people attending - its good and encouraging to see so many people interested in Power Systems. The results are fascinating a few top technologies are clear favourites but then the IBMer and customer views are... [More]
Hi, Rob McNelly, the esteemed POWER7 Champion, sent me a really good questions and I thought would make a good blog as I get asked this about once a month. I have cut down the questions a but but it is a two parts: His customer is thinking about putting Systems Director on to their NIM server. Rob remembered me commenting on this but wants the details. They are planning to give it 1 dedicated Power7 core and 12G memory. What do I think about that? Answer 1: 2 years ago this combination (NIM & ISD) was not allowed ( I think it was just not... [More]
The answer is "it depends" and there is no Rule Of Thumb - IMHO.
The 2 times ROT is very old school and for small servers where peaks could really run out of RAM fast and hurt.
The worst I saw was 6 times but that was OS guys and RDBMS guys and app guys all said 2 times ... each!! and then the System Admin guy just added them up not realising it was the same 2 times! Basically, bonkers and they used 2% in the end.
With machines with large memory, say starting at 64 GB, the memory demand... [More]
The new "multibos" command (AIX 5.3 ML3) provides dual AIX boot from the same rootvg. You can run production on one boot image while installing, customizing or updating the other. This is conceptually similar to AIX's "alt-disk-install". However, in "alt-disk-install" the boot images must reside on separate disks and separate rootvg's. The "multibos" capability allows both OS images to reside on the same disk/rootvg, avoiding the need for a separate disk. For more information see... [More]
The AIX, Linux, System p Technical University will be held October 1-5 in San Antonio, Texas. The sessions are now available at http://www-304.ibm.com/jct03001c/services/learning/ites.wss/us/en?pageType=page&c=a0004782 You can register at http://www.ibm.com/training/us/conf There is a 10% discount available to PowerAIX members. (You can join for free at http://www.poweraix.org) Apply for the discount at enrollment as follows. Enroll at http://www.ibm.com/training/us/conf and follow these steps:Choose the IBM System p, AIX and Linux Technical... [More]
This picture was taken by Shawn Mullen - Security Architect for AIX and cool speaker at the event too. It was taken outside of the Gala Dinner on the Wednesday evening - where we had good food and "interesting" Czech musical entertainment at the beautiful historic Zofin Palace on an island in the main river. From left to right are some of the top speakers at the conference: Ignoring the waiter with the excellent champagne! Jay Kruemcke - Power Software Program Director, USA - Mr AIX to his friends - twitter: chromeaix Patrick... [More]
Odd. I thought I have put this on this blog before but I can find it now so just in case ... here it is or here it is again.
The SSP4 can have mirrored failure group FC disks to handle adapter, FC cable, FC switch, entire FC disk sub-system, site or VIOS failure.
But there is still a single SSP Repository disk. Isn't this a single point of failure?
The answer is " No because you can quickly rebuild the contents of the Repository Disk after it has failed ."
You are not meant to know this... [More]
Looking for current RPM's? You might try http://sourceforge.net It has replaced the Linux Toolbox for AIX website, according to the following announcement. http://sourceforge.net/forum/forum.php?forum_id=447677 The original website still exists. Original Toolbox: http://www-03.ibm.com/servers/aix/products/aixos/linux/index.html Other AIX-specific websites: UCLA: http://aixpdslib.seas.ucla.edu/ Bull: http://www.bullfreeware.com/
We found it was taking from two to three hours to run the configure script for apache. After searching we found that the solution was to change the environment variable CONFIG_SHELL to point to a different shell than the default ksh. When this was done, the multi-hour run of ./configure was done in 3 minutes. Solution: From the Mozilla site for AIX it says: export CONFIG_SHELL=/opt/freeware/bin/bash export CONFIGURE_ENV_ARGS=/opt/freeware/bin/bash ./configure From testing, I found I could also use ksh93 and get similar results. export... [More]
System microcode and HMC versions are becoming increasingly coupled. New microcode requires the latest HMC version. And the latest HMC version may not be fully backward compatible with older microcode. Customers are responsible for maintaining the HMC and system microcode on most pSeries models. To avoid problems, here are "my best practices" for maintaining HMC-microcode. This list intended for mission critical, production systems. Further it is intended for system microcode, rather than adapter microcode. You'll notice that some of the... [More]