4.7 Solutions for SIMATIC BATCH
Redundant BATCH servers
SIMATIC BATCH enables you to configure two BATCH servers redundantly for high availability
operation. This ensures that you can monitor and control your batch process at all times.
Functionality
Redundant BATCH servers monitor each other in runtime to detect the failure of a BATCH
server as early as possible.
If one of the two BATCH servers fails, the process can be controlled over the second BATCH
server after the switchover.
● The interface for message processing between the active BATCH server and the OS server
remains available.
● The BATCH clients automatically fail over to the functioning (active) BATCH server. After
the switchover, it is possible to control and monitor the process from all BATCH clients.
In SIMATIC BATCH, the consistency of the databases is achieved by data replication. In this
solution, each of the BATCH servers of a server pair has its own database in which the batch
data stored. The two databases are continuously synchronized.
Setting up a redundant BATCH server
The following configuration shows the basic operating principle of redundant BATCH servers.
The BATCH servers are also connected to the plant bus if SIMATIC BATCH is operated "AS-
based".
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High availability solutions in PCS 7
4.7 Solutions for SIMATIC BATCH
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA 99
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