Tom, I had that exact question when we upgraded our z900's to z990's in 2004. The HSA on our z900-106 machines was about 160Meg ( although we had logically reserved 192Meg, just in case ). When we upgraded to our twin z900-106 machines to z990-304 & z990-304 machines ( they are now z990-306 & z, the HSA for each z990 machine was a little over 1024Meg ( we have logically reserved 1600Meg, just in case ). I asked my local IBM rep's to find me someone within IBM that could answer that question. We spoke to someone with IBM WSC and the answer they gave me was: The HSA 'space' increase from z900 to z990 is being caused by 1) new function support 2) support for non-disruptive ( no POR ) addition of all engines/books. I would assume that the z9 is continuing/growing that capability.
Glenn Miller ---------------------------------------------------------------------- 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
