Which prerequisites of the primary system and the secondary system are mandatory before activating SAP HANA system replication with secondary time travel?

The requirement for identical CPU architecture between the primary and secondary systems is crucial for activating SAP HANA system replication with secondary time travel. This prerequisite ensures that both systems can efficiently handle data types, memory management, and processing tasks consistently. Differences in CPU architecture may lead to compatibility issues that could affect the replication process and system performance, thereby undermining the integrity and reliability of the replicated data.

In the context of SAP HANA replication, having uniform CPU architecture allows for optimized data handling and execution of tasks across both systems. This matching ensures that the secondary system can accurately apply the incoming data changes from the primary system and allows for seamless querying and analysis, even during time travel scenarios.

While the other options may involve considerations for system configuration, they do not directly impact the replication process to the same extent as the requirement for identical CPU architectures. Different hardware configurations and different SAP HANA versions could potentially be accommodated in certain situations, but having the same CPU architecture is non-negotiable for successful system replication and its associated capabilities. Remote access is important for connectivity, but it does not relate to the system architecture per se.