What are the most important HA features of the SAP Web AS?
The SAP Web AS has built-in scalability and redundancy: Multiple front-ends can run against multiple application servers. Using load-balancing features (logon load balancing and Web Dispatcher), the requests will be directed to the best suitable application server. The database can be protected with common HA measures as clustering, parallel database, or standby databases. After a fail-over of the database, the work processes can reconnect and continue their work.