Please make sure you take one recent (late 2016) innovation into consideration: Asynchronous CF Lock Duplexing. My understanding is that this recently introduced Coupling Facility feature offers performance improvements in many scenarios, including some distance "stretched" Parallel Sysplexes. IBM published some related performance test data only last year (2017). If you're looking at older references, you might be missing a lot.
It could be helpful to understand the motivation(s) behind the question. As a notable example, does somebody want to create (or maintain) a "BronzePlex" to satisfy Parallel Sysplex aggregation rules? (Those rules are becoming less relevant now, at least, but that's a separate point.) As another example, if the focus is on protecting and preserving data, then it might make sense to stretch the storage but not the Sysplex. -------------------------------------------------------------------------------------------------------- Timothy Sipples IT Architect Executive, Industry Solutions, IBM Z and LinuxONE, AP/GCG/MEA E-Mail: [email protected] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
