04/09/2020
Switchover Setup for Systems based on ABAP Platform S/4Hana 1809 or higher.
The following diagrams show the essential features of a switchover setup for systems based on ABAP Platform
1809 or higher, that is with the new Standalone Enqueue Server 2 in the ASCS instance and Enqueue Replicator
2 in the ERS instance:
● ASCS instance and ERS instance must reside in different failover groups.
● The failover groups of the ASCS instance und ERS instance can reside on the same or on different nodes.
There can be more than two nodes for the ERS instance and for the ASCS instance.
Note
The example in this diagram describes a setup where the ERS instance and the ASCS instance reside on
different nodes, and where the failover groups of the ASCS instance und ERS instance reside on different
nodes.
However, the ERS instance and the ASCS instance can also reside on the same node, and the failover
groups of the ASCS instance und ERS instance can also reside on the same nodes. These setups are not
shown in this example