Database DR
In the SAP ASE system, the DR strategies for applications and databases are different.
- On HUAWEI CLOUD, use SDRS for the DR of SAP application servers.
- For the ASE database, use the HADR scheme or HUAWEI CLOUD SDRS. For details about the SDRS, see the Storage Disaster Recovery Service User Guide.
Figure 1 shows the HADR scheme of the ASE database.
Description
The SAP ASE production system is deployed in HA mode. The HADR scheme facilitates synchronous replication between the primary and standby nodes to ensure data consistency. The asynchronous replication is implemented between the standby node and the standby DR node.
The DR system is deployed in a different area from the production system. The two areas are connected through private lines. For more details about HADR, see HADR with SAP ASE on the SAP website.
The primary, standby, and standby DR nodes must have the following in common:
- OS and patch level
- SAP ASE version
- ASE database parameter configuration
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