Articles by Rui Miguel Feio

A Base Sysplex configuration is a sysplex with no Coupling Facilities. The Base Sysplex can be composed of one or more z/OS systems that have an XCF sysplex name and in which the authorized programs (members) use XCF services. XCF services are available in both single and multisystem environments. A […]

To enable the communication between a Coupling Facility (CF) Logical Partition and the z/OS LPARs, special types of high-speed CF links are required. These links are important because of the impact of link performance on CF request response times. For configurations covering large distances, time spent on the link can be […]

The Coupling Facility LP is defined through HCD and Processor Resource/Systems Manager (PR/SM) panels on the Hardware Management Console (HMC). Once you have defined an LP to be a coupling facility LP, only the CFCC can run in that LP. When you activate the Coupling Facility LP, the system automatically loads the […]

Coupling Facility Control Code is an IBM licensed Internal Code that always runs under an LPAR, regardless of whether the CF is in a standalone CPC or in a general purpose CPC (where CFCC LPs are together with z/OS LPs). A standalone CPC is a CPC only allowing LPs running […]

ICFs are PUs in a CPC configured to run only CFCC code. The PUs are not shipped with a fixed function assignment, but are assigned during power-on reset (POR) or later non-disruptively by on demand offerings such as: CBU, CUoD, CIU, ON/OFF CoD.   Those offerings allow the customer to […]