LPAR A-to-Z
John Davenport, IBM

January 18, 2005 FASUG Meeting

LPAR A 2 Z, hopefully the name says it all. LPAR stands for Logical Partitioning. It's the process whereby you take a single iSeries server and logically (and to some degree physically) carve it up into multiple iSeries servers, (called partitions) some of which could be Linux or even AIX (Power5 only). First I go into the reasons and advantages of why you might want to get 'many from one', and once I've sold you on the concept I'll show you how easy it is to accomplish. All my examples are on a new Power5 520, but the process applies to almost all supported iSeries models, even uni processors.

At the end of the presentation I'll show you a movie I made where I run a partition on my 520 at 1,000 percent busy, neat but not gaudy

John Davenport
It all started in a small 40 watt radio station in Dayton Ohio . . . no wait, that's Les Nessman. I, on the other hand, have been with IBM for more years than I care to count - but if I did they would add up to almost 31. I started life as CE Dispatcher. Since then I've been a Program Support Rep, an 8100 (don't ask) developer, Level 1 Support Line Rep, Service Planner, System Engineer, Level 2 Support Line Rep and today my title is Advisory software Engineer (whatever that means) - in Atlanta, Kingston (NY), Tampa, Raleigh, Portland and finally in Rochester (MN). Other than that I've pretty much stayed put in the same job/location. One of my basic philosophies in life is that a moving target is harder to hit.
I've been with the iTC (iSeries Technology Center) ever since it started life as the Transition Support Center in 1995. The last 3 + years I've focused almost exclusively on LPAR, where I do a little of everything. I teach, present LPAR at technical conferences and even do a few onsite implementations (both normal and critical situations). I've been in Technical education for the last 7 years, first with BRMS and now LPAR.

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