For Cloud Pak for Business Automation (CP4BA) versions that do not have a direct, supported upgrade path, a migration is required. This process involves deploying a new, clean instance of the target CP4BA version. The critical data from the previous installation, which resides in persistent volumes (PVs) and databases, is preserved. The old deployment is then decommissioned, and the new deployment is configured to connect to and utilize these existing persistent data stores. This "lift and shift" approach ensures data continuity while moving to a newer, non-directly-upgradable software version.

A. This is factually incorrect; IBM documentation explicitly defines supported upgrade paths, and not all older versions can be directly upgraded to the latest release.

C. This describes an incorrect sequence for a standard upgrade; operators are upgraded before the core capabilities (operands), and this scenario is for when upgrades are not supported.

D. Mirroring persistent stores is a data replication or disaster recovery technique, not the core procedure for migrating a CP4BA deployment to a new version.

1. IBM Cloud Pak for Business Automation Documentation: In the section on migrating

the process for moving from an older

non-upgradable version is detailed. For example

when moving from 22.0.1 to 23.0.2

the documentation states: "If you want to move your deployment from Cloud Pak for Business Automation 22.0.1 to 23.0.2

you must install a new 23.0.2 deployment and then move your applications from the 22.0.1 environment." This confirms the need for a new installation.

Source: IBM Documentation

Cloud Pak for Business Automation 23.0.2

"Migrating from previous releases to 23.0.2".

2. IBM Cloud Pak for Business Automation Documentation: The documentation further clarifies the migration process for containerized components

which aligns with reusing persistent stores: "The general process is to back up the databases and the persistent volumes of the source deployment

and then restore them in the target deployment." This directly supports the concept of pointing a new deployment to existing data stores.

Source: IBM Documentation

Cloud Pak for Business Automation 22.0.2

"Migrating from 21.0.3 or 22.0.1"

"Migrating your container deployment" section.

3. IBM Cloud Pak for Business Automation Documentation: The official upgrade paths are explicitly defined

demonstrating that not all versions support a direct upgrade. For instance

to upgrade from a version earlier than 23.0.1 to 23.0.2

an intermediate upgrade to 23.0.1 is required first

invalidating the claim that all versions support a direct upgrade.

Source: IBM Documentation

Cloud Pak for Business Automation 23.0.2

"Upgrading Cloud Pak for Business Automation".