Process of migrating a S4HANA

Process of migrating a S4HANA

the process of migrating S4hana from the Source to the Target (Azure Cloud) utilizing the HANA Replication Server (HSR) method, as well as the steps required to configure HSR on the Target (Azure).1. Prior to initiating the process, it is essential to familiarize oneself with the environment and access requirements, as well as the specifications of the target system. Understanding the server configurations is crucial for a successful HANADB migration.2. The migration preparation involves several key steps, including shutting down the SAP system, updating operating system parameters, and modifying the HANA parameters. Additionally, it is necessary to update the /etc/hosts entry and set up the HANADB migration using HSR.3. The next phase includes shutting down the HANA database on the target secondary node, unregistering it, and then performing the same actions on the primary node. It is important to verify the source system's log mode and transfer the rsecssfs PKI keys from the source, along with checking the site ID.4. Following this, HSR registration on the secondary node should be completed, and the HANA database on the secondary node must be started. The HSR status should be monitored to ensure synchronization with the source, after which the secondary database can be stopped and unregistered.5. A confirmation of the primary database's status is necessary before starting the HANA database on the secondary node. Subsequent steps include resetting the system user password, conducting a health check on the HANADB, and stopping the database for a VM snapshot.6. It is also important to schedule a Commvault backup and establish high availability for the HANADB. The secondary database should be shut down, HSR enabled on the primary database, and then registered on the secondary before starting the HANA database on the secondary node and checking the HSR status on the primary.