>Are you taking into account the limitations on the zAAP count for a >zSeries box?
Yes. A single zAAP has way more than the 9 "MSUs worth of Java capacity" in the hypothetical example used. The smallest zAAP available is on the z890, and there (like on any other model) it's a whole engine. A whole (single) z890 engine (i.e. Model 170) is about 56 MSUs for comparison. The software charging basis is still 3 MSUs in that example I used. A very ballpark estimate (with 100% of the workload running under WebSphere Application Server for z/OS) would be that approximately 75% of the processing could shift over to zAAP. (That's for "typical" WebSphere workloads, whatever typical means. Your mileage may definitely vary.) So that's how we get to the 3 MSUs plus 8 or 9 MSUs = 11 or 12 MSUs worth of Java capacity (on a 3 MSU charging basis) when you add a zAAP. Extreme caution here, though, because things might get a little funny down in this corner of the performance curve. This is all very back-of-the-envelope sort of estimation of course, and whether it would make sense to get a zAAP for the 4th MSU is an open question (may or may not be less cost to just stick with general purpose engines at small entry workload levels), but hopefully this all makes sense at least as a mind exercise. To respond to Phil, it's hard to respond to birdshot (so to speak). :-) But there is one point I want to make, which is that I simply said that the software charges for entry workloads are frequently the least costly on System z as compared to all other platforms. That's especially true in real world circumstances (i.e. when test/QA/production/DR resources are all factored), but you don't even have to go that far. Said another way, if your transaction volume is 1,000 WebSphere transactions per day, then it's a near sure bet the least expensive software platform is System z (i.e. your software cost per transaction is the lowest there -- dramatically lower). That is ALL I claimed, and it's simply irrefutable -- the 3 MSU starting point (versus the 100 Value Unit Passport Advantage starting point) has a lower price for a wide range of IBM software products. Believe me, there are small companies that have figured this out. So now you all know the 3 MSU software pricing "secret." Y'all have fun now, ya hear? :-) - - - - - Timothy Sipples IBM Consulting Enterprise Software Architect Specializing in Software Architectures Related to System z Based in Tokyo, Serving IBM Japan and IBM Asia-Pacific E-Mail: [EMAIL PROTECTED] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
