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
The following paper by Ralf Schmidt-Dannert discusses the performance impact of AIX micropartition options on a 2 tier Java/C++/Oracle application. His benchmarks show micropartitioningcan have a positive impact on application performance. His conclusionsinclude: 1. The micropartition CPU sharing improved performance over static LPARs2. SMT improved performance (default AIX setting)3. Don't over configure Virtual Processors (My recommendation is to configure at most one Virtual Processor per CPU in the free pool)... [More]
With day light savings time nearing, its a good time to check if your AIX version has the proper patches. There were some problems in some TL's last fall. The recommended levels are: AIX 6.1 Package Level shipped APAR/Filesets 6100 TL0 6100-00 IZ09600 bos.rte.libc 126.96.36.199 6100 TL1 6100-01 IZ22211 bos.rte.libc 188.8.131.52 AIX 5.3 Package Level shipped APAR/Filesets 5300 TL8 SP2 5300-08-02-0822 IZ22212 bos.rte.libc 184.108.40.206 Package Level shipped APAR/Filesets 5300 TL7 SP2 5300-07-02-0806 IZ11729 bos.rte.libc 220.127.116.11 If you have any questions, check... [More]
IBM is starting to contact customers and business partners urging them to pay very close attention to keeping firmware current in order to minimize unscheduled outages. Here's an excerpt from a letter sent to IBM Business Partners: "Ensuring all IBM pSeries systems in customer locations are up to date on Firmware loads is essential to achieving the highest level of customer satisfaction possible. Firmware updates provide increased hardware reliability to customerseServer p5 systems. But we can't get the word out to all our customers without... [More]
Unlike its predecessors, the 7042 Hardware Management Console for a POWER6 server does not have to be within 25 feet of the managed system. However, there may be practical reasons why it will continue to be close to the machines it manages. The purpose behind the distance limitation was to facilitate work by an IBM Service Support Representative. One of the HMC's functions is to serve as a repository of service information and tools. Some service utilities, such as the ability to blink lights on and off to identify adapters, would be... [More]
PowerHA recently announced support for the following: PowerHA announces support for DS3400 PowerHA announces support SAS Adapters PowerHA announces support 5735 PCI-e Dual Fibre Adapter Click on the above linked text for full support details.
Support for the new Power5+ Servers: http://w3-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH10519 HACMP supports the IBM System Storage DS4200 Express http://w3-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH10514 HACMP supports SVC 3.1 & Metro Mirror Express http://w3-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH10513 HACMP supports the JS21 BladeCenter Express http://w3-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/FLASH10512 HACMP supports the IBM System Storage DS4700... [More]
The latest Versioned Workload Partition (VWPAR) Version 1.1.2 is available but largely secret!
With this update I get on my AIX 7 virtual machine, in which I have installed both AIX5.2 and AIX 5.3 support:
# lslpp -L | grep -i vwpar
vwpar.52.rte 18.104.22.168 C F AIX 5.2 Versioned WPAR Runtime
vwpar.images.52 22.214.171.124 C F Versioned WPAR 5.2 Support
vwpar.images.53 126.96.36.199 C F Versioned WPAR 5.3 Support
vwpar.images.base 188.8.131.52 C F ... [More]
Assuming you have dozens to hundreds of AIX VM's now running on your PowerVC controlled machines at some point you will have to upgrade the AIX version to keep current and ensure security.
PowerVC does not have OS upgrade functions but it does have features that can help make upgrades safe and simpler. The upgrading of AIX is already handled by tried and tested methods and to be blunt I am not convinced I want PowerVC to do it as I want to visually check the install worked and immediately address any issues to ensure... [More]
AIX5L Practical Performance Tools and Tuning GuideRevised: November 2, 2006 ISBN: 0738491799 738 pagesExplore the book online at http://www.redbooks.ibm.com/abstracts/sg246478.html Certification Study Guide: System p5 Admin & Support for AIX v5.3Revised: October 31, 2006 ISBN: 0738496499 720 pagesExplore the book online at http://www.redbooks.ibm.com/abstracts/sg247199.html
AIX O/S Updated to Support New Daylight Savings Time Change The Energy Policy Act of 2005 (Public Law 109-58) was passed by the United States Congress on July 29, 2005 and signed into law on August 8, 2005. This law changes the time-change dates for Daylight Saving Time in the United States. Beginning in 2007, DST will begin on the second Sunday of March and end on the first Sunday of November. IBM has released updates to AIX 5L operating systems to support this change. The updates should be applied prior to March 11, 2007. AIX 5L Version 5.3... [More]
If you are using AIX sendmail, you should consider the following fix to prevent spammers from using it as an open mail relay. ftp://aix.software.ibm.com/aix/efixes/security/sendmail_3_mod.tar.Z /a> The exposure applies to AIX 5.3 ML1 and earlier distributions. The exposure was resolved in AIX 5.3 ML2. For more information, see http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0285
Late last week Systems Director 6.2 was released - a few days early too! This is the free to download and use IBM platform management software from IBM. For us AIX guys that means Power Systems Hardware, HMC, IVM, VIOS and AIX - and Linux on POWER too This new release is was focused mainly performance, simpler install (or migration from 6.1) and rolling in many fixes that could not be addresses with service packs. There are also some new features like dual VIOS SAN support for VMControl virtual application deployment. AIX is obviously the... [More]
I want to remind you of the value of pSeries Subscription Services. Recently, those of us subscribed to receive 'Critical Fixes' got a note pointing to this URL: http://techsupport.services.ibm.com/server/criticalfixes3/critfixes/5300-02.html This listed 36 Critical Fixes of which two were Critical Security Fixes: IY68463 AIX 5.3 SECURITY: Local root exploits in perl 5.8.x IY70026 AIX 5.3 Attacks against TCP via ICMP Other critical security fixes recently announced through subscription service IY68825 AIX 5.3 Remote... [More]
I regularly get asked to run a demonstration for IBM Systems Director but that is a time consuming business for both me and the audience. Especially, when you can find out every thing that I know from the comfort of you own office or even home office plus Stop, Replay and Pause via YouTube videos. So here is a reminder and hopefully a page I can point to when I next gets asked.
ISD63 Workshop 1 Techie Intro... [More]