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The Important Methodologies for SAP HANA Data Replication

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The Important Methodologies for SAP HANA Data Replication

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  1. The Important Methodologies for SAP HANA Data Replication Before going into the methodologies for SAP HANA data replication, it is important to understand the concept behind it. The process of replicating or copying an SAP HANA database to another location is SAP Hana replication. It can be either an on-premises database or an external data center. Apart from replication, the SAP database can continually synchronize with the primary or source database. The focus of system replication is to support data recovery and ensure high data availability.

  2. Methodologies for SAP HANA Replication Synchronous In-Memory Mode: In this mode, the main node waits for a confirmation from the secondary node about the log being successfully received for replication. There will be no transactions in the primary node system till an acknowledgment is received from the secondary node. This method of SAP Hana replication is ideal for disaster recovery.

  3. Synchronous Mode: The primary node does not execute its transactions till an acknowledgment is received from the secondary mode about replication. The main benefit here is that data consistency is continually maintained between the two nodes. • Synchronous full sync mode: This mode ensures complete data security. The primary node blocks all transactions until SAP Hana replication is completed by the secondary node and an acknowledgment is received by the primary node. The mode is perfect for multi-tier system replication setups as the main concern is data security. 

  4. Asynchronous mode: The primary and the secondary modes are not synchronized. The primary node commits a transaction written on the log file of the primary system and that is sent to the secondary node. Later, the redo log buffers are sent to the secondary system asynchronously.  • These are the four methodologies for SAP HANA replication.

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