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
Fourteen new movies/Video's on System Director on YouTube I have just last week uploaded 14 new System Director movies that were previously a whole day Technical University session and I thought it a good idea to share these with every body. It comes to about 4 hours in total and it a mixture of sizes from 7 minutes to 29 minutes. The focus is on core Systems Director function rather than advanced function plug-ins. It worries me a little that we often try to talk about and sell Systems Director for the advanced stuff but you really need to get... [More]
Our Advanced Technology Support, Europe team have had a few months secretly testing the Power 750/760 internally to IBM as part of the normal Early Ship Program which lets a few machine out of the development labs to be tested by others to gain feedback on the product, documentation, features and usability. I thought others would like to see a few pictures of the team and the equipment involved. Please note: This is an Early Ship Machine, so there are a few details like stickers and handle colours that may differ slightly from the final product... [More]
Hot news this morning is IBM announcing the updating of the Lower End Power 710/730 and Power 720/740 models to include Power7+ processor with 2.5 larger L3 cache, Active Memory Expansion accelerator, and GHz boost Double the memory size This gives a large performance boost and drastically higher "bangs per buck" as the Americans say or "Value for money" as we Brits say. Almost everything else is the same so if you know the older models it is easy to understand Announcement letters for the new Power7+ models: Power 710 ,... [More]
Another good questions from a customer and my answer was simple: The PowerVM internal network on POWER machines operates just like a physical network. If two LPAR are on the same internal network and the root user puts the virtual adapter in to promiscuous mode then it can see all packets. Just like a physical network. If the two LPARs are on different internal networks then they can never see the other LPARs packets. Just like two physical networks. If two LPAR are on the same internal network but on different VLANs then they can never see... [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 new VIOS Shared Storage Pools 3 (SSP3) arrived a month ago and I have all my VIOS updated now to VIOS 220.127.116.11 plus fixes. This brings with it the regular VIOS improvements but also new features for SSP3 including: Better pool use stats for example see the below lssp command and the Used percentage and Unused(mb) columns and the over view output too has new data $ lssp -clustername stars -sp atlantic -bd Lu Name Size(mb) ProvisionType %Used Unused(mb) Lu Udid orange7a 32768 THIN 9% 29615 7d58538152 …... [More]
Time to correct a few assumptions and statements that I made a while back. Previously I said the POWER Hypervisor decides where to put a Virtual Machine (VM/LPAR) based on the Virtual Processor number (spreading factor). Well, apart from it nearly being right ... I was actually wrong! I got talking to one of these very impressive Hypervisor developers in Germany and he put me right. In most of my larger machines, I do what I think is fairly normal for creating an VM - like working with a CPU core to RAM ratio that my customers use, like 1... [More]
I have indirectly been getting copies of this 4 page, .PDF, once a quarter, Power Systems Newsletter written by Richard Milton (an IBMer in the USA) and every time found a few "Wow! That's Cool!" items in it. I just checked with Richard and he says anyone is free to sign up to the email list and you will get it emailed to you once a quarter. I have signed up. Needless to say, it is for Techies and not marketing fluff but has a couple of one page quick details of particular products and experience and comments on them. Then there... [More]
A large UK customer is running a series of tests on AIX and POWER7 machines and wanted to display the results on a webserver using rrdtool and needed help getting a working example running. So I stepped up to the challenge one night rather than it becoming a search for rrdtool skills inside IBM - when I could sort something out in a few hours. No one in IBM would claim to be a rrdtool expert until they knew the details of what was required. Many people know it well enough to get what they want done but would not put rrdtool guru on their CV. ... [More]
I am currently updating my AIX systems and AIX 7 TL2 with its first service pack is now available for download from ESS or IBM Entitlem Software Support to spell it out in full (http://www.ibm.com/servers/eserver/ess) for install media and FixCentral for updates (http://www-933.ibm.com/support/fixcentral/). While downloading the install media files I noticed there is a new Firefox for AIX available Firefox V3.6.25. This is a jump up from the previous one and I have had (in the past) a few annoying problems with Firefox on AIX Some weird issue... [More]
Four things I think you should know before you try this: The documentation for the update can be found here: http://www-01.ibm.com/support/docview.wss?uid=hpc1vios117f5701 I updated three of my Virtual I/O Servers to 18.104.22.168 from 22.214.171.124 over the weekend. I started these late on Friday night with the "no reboot" options and they finished about the same time on Sunday afternoon i.e. 48 hours . The Release Manager downloads the update directly to the VIOS /opt/VIOS/update/VIOS and sub directory for the release name and this takes over... [More]
Common question: I see XX% of Used Memory but I don't know who is using it and how?
A simple question but there is no simple answer as memory use if complex.
nmon then hit "m" will quickly show you a few big uses of memory as below:
The shared memory used by lots of applications like DB2 and Oracle - check the SEGSZ for the size.
The Owner column usually tells you what it is used for like the oracle user for the SGA or db2inst1 for the DB2 buffer... [More]
At a recent POWER & AIX Workshop, I was challenged when I stated that you can download IBM Systems Director (ISD) and run it at no costs. Granted: If you want IBM Support for ISD functions then you do need to purchase the license and SWMA for every endpoint (think HMC and every core of any machine that ISD is controlling). Compared to other systems management tools (I have worked with in the past) the ISD prices are very low so its worth asking for the local currency price. I also think most people (including myself) will get stuck on... [More]
It has bee a long few weeks traveling to Dublin, Las Vegas, Slovenia, Germany and Sweden to give lots of presentations. Six Weeks and five countries and the expenses are piling up on my desk. I was presenting a core set of topics like POWER7+ announcement summary, VIOS Shared Storage Pools (SSP3), Workload Partitions (WPAR) and Versioned WPARs to run AIX 5.2 and AIX 5.3, quick introduction to PowerSC (security tools), a Techie "what you need to know about" Systems Director for AIX, and Quick Dips in to Active Memory Deduplication... [More]
I suddenly could not get AIX updates to work via my NIM server. The problem number DNZPAX075E just means the NIM command failed for unknown reasons. Not very helpful when you have a ISD Server, NIM Server and a Target AIX Server and the problem could be anywhere. I looked around and found a few other people were stuck on this one. So now I worked it out - with the help excellent help of systems Director support. 1) Restart the Systems Director Server and the NIM Server - just good house keeping and check you have free disk space in the... [More]