3.5.5 Redundancy
3.5.5.1 Introduction
Availability
To increase the availability of the batch control and to allow a software update during operation,
SIMATIC BATCH provides the option of installing a redundant BATCH server. If there is a
failure in the redundant system, there is a standby/master failover between the redundant
BATCH servers.
Redundancy is achieved with redundant BATCH servers each with local data management.
To safeguard data and to allow the batch applications to access the current data, the data is
constantly synchronized between the two local data management systems - a data replication.
This ensures that after the failure of one BATCH Control Server or database server, the
redundant server can continue to work with the same data without the loss of data or gaps in
the documentation.
Configuring and commissioning
Note
Requirements
To establish the software and hardware requirements and when configuring and
commissioning redundant servers in the SIMATIC PCS 7 system, you should always consult
your Siemens representative.
References for redundant PCS 7 OS
An introduction to the general redundancy mechanisms is provided in the function manual
Process Control System PCS 7; Fault-tolerant Process Control Systems
. This documentation
is on the "PCS 7; Electronic Manuals" CD. This is general documentation describing the overall
concept of availability in PCS 7. This also includes, for example, more information on the
redundant PCS 7 OS.
Product introduction and installation
3.5 Possible configurations
SIMATIC BATCH V8.2
54 Operating Manual, 02/2016, A5E35958174-AA
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