Disaster recovery - SAP NetWeaver on AWS

Disaster recovery

See Disaster recovery deployment to learn about disaster recovery for your SAP ASE database.

Perform a DNS change

In case of manual failover, you may install SAP application servers using a virtual hostname and perform a DNS change to direct the SAP application servers to the new primary database server. For a DNS resolution in AWS, you can use any of the following options.

  • Amazon Route 53 enables you to create a private hosted zone for your environment and an A record for the virtual hostname used for SAP ASE database. Initially, this A record is mapped to the IP address of the primary SAP ASE database instance.

  • You can maintain your own DNS server on-premise or on your Amazon EC2 instances. You can create an A record there for your virtual hostname used for SAP ASE database. Initially, this A record is mapped to the IP address of the primary SAP ASE database instance.

  • With the AWS Directory Service, you can create an A record for the virtual hostname used for SAP ASE database.

With any of the previously mentioned options, you can change the A record to a private IP address of the primary database instance in case of a failover. This DNS change can also be automated using AWS services and scripts.