How is the system replication mode set in SAP HANA?

The system replication mode in SAP HANA is indeed set in the system administration settings. This allows administrators to configure and manage the replication processes according to their specific requirements. System replication is a critical feature for ensuring high availability and disaster recovery, allowing for the continuous replication of data between the primary and secondary systems.

Setting the replication mode in the system administration interface provides flexibility and control to manage different replication strategies, such as synchronous or asynchronous replication. This capability enables administrators to optimize performance and data integrity as required by their business processes.

The other options suggest either limiting the ability to set the replication mode to a one-time action during installation or implying that it can be configured solely through a configuration file, which does not reflect the admin’s ongoing ability to adjust replication settings. Additionally, the option mentioning that it is not configurable contradicts the fundamental management capabilities within the SAP HANA administration environment.