IBM released IBM Cloud Pak System 2.3.3.3 on 31 December 2020, as detailed in the Related information for IBM Cloud Pak System releases IBM Support documentation. This release also includes a Tech Preview to deploy a stretched OpenShift 4 cluster across multiple IBM Cloud Pak Systems. This is something several clients have been asking for this, as it unlocks a number of scenarios to increase the resilience of an OpenShift cluster.
Together with my colleagues Hugh Hockett and Chris Liebl, I have just published the IBM Developer tutorial Deploying a stretched OpenShift 4 cluster across multiple IBM Cloud Pak Systems. It explains how to enable the Tech Preview in IBM Cloud Pak System 2.3.3.3, describes the scenarios and takes you through a step-by-step process to deploy a stretched OpenShift cluster.
IBM Cloud Pak System 