2.1 Prerequisites 2.1.1 IBM Z hardware 22  Getting started with z/OS Container Extensions z14 and z15 Feature Code 0104 CPU planning Figure 2-1 Configuring feature code 0104 for a z14 system on IBM e-config tool When considering zCX, you must plan for IBM Z hardware features as well as z/OS, the  underlying operating system. The following IBM Z hardware types support the execution of zCX: Ensure that the IBM Z processor, where you plan to run zCX, has hardware feature code  0104 (Container Hosting Foundation) included. If feature code 0104 is not installed on one of  the previously mentioned machine types, it can be configured using the IBM e-config  hardware configurator, and ordered through a fee-based MES. Figure 2-1 on page 22 shows  you the panel from e-config, where you would select feature code 0104 for an IBM z14  system. For IBM z15 configurations, you would select the same feature code. To prepare the setup of your zCX environment, you must plan for processor usage. zCX  instances can run on either general purpose or zIIP processors. One advantage of running  zCX on zIIP processors is that it does not affect your software bill. The other advantage is,  GLYPH<SM590000> IBM z14fi, type 3906, with the GA2 driver level. GLYPH<SM590000> IBM z14 ZR1, type 3907. GLYPH<SM590000> IBM z15™, type 8561 model T01.