Tommy, David Raften authored a good whitepaper which I would recommend reading if you haven't done so already. It's available here:
ftp://ftp.software.ibm.com/common/ssi/rep_wh/n/ZSW01971USEN/ZSW01971USEN.PDF Like many other areas of technology it's very important to get the latest information. You may wish to request at least a short briefing directly with IBM Poughkeepsie on this subject since there's a lot that's new. There are many possible configuration choices, and the pros and cons vary and also depend on what level of technology you have. For example, z/OS 1.8 introduced some significant improvements to duplexed coupling facility handling, so much so that the improvements could influence whether or not you need to dedicate a whole frame to a coupling facility. Other questions I might look into: whether you should replace the 9037 timers with Server Time Protocol (STP), and, if you do decide a dedicated CF frame has value, whether that frame should be a 2094 or 2096 model. The 2094 consumes more electricity and takes more space, so you need some advantages to justify the 2094 versus the 2096. Other responders are absolutely correct: there's no physical difference between ICFs and external CFs. The only difference is whether a frame is dedicated to the coupling facility LPAR(s)/code or not. - - - - - 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
