Siemens Simatic PCS 7 Function Manual page 233

Requirements
● The PCS 7 project you are updating has already been updated on the ES.
● Archive synchronization is complete.
– Message: "REDRT: <name of the OS server> finished".
– Using a Process Historian:
● Make sure that at least one updated OS client is interconnected with Server_2.
If no OS client is interconnected with Server_2, your system cannot be operated while you
are updating Server_1.
Procedure - Phase 5
Phase 5 / 1. Server_1: Deactivate and exit WinCC
● Deactivate WinCC Runtime on Server_1.
● Exit WinCC on Server_1.
● Updated Server_2 is master server.
Phase 5 / 2. Client_1: Setting the preferred server
● If the preferred server for Client_1 is set to Server_2, carry out the following steps:
– Close WinCC Runtime on Client_1.
– Set the preferred server for Client_1 to Server_1.
– Start WinCC on OS Client_1.
● Activate WinCC Runtime.
Phase 5 / 3. Server_1: Backup of the PCS 7 project, of the operating system and of the PCS
7 software installation
● Back up your previous operating system, the previous PCS 7 software installation and your
current PCS 7 project as a fallback strategy.
Phase 5 / 4. Server_1: Installation or update of the operating system, PCS 7 Installation "OS
server"
● Install or update the operating system (you can find information about this in the manual
Process Control System PCS 7; PCS 7 PC Configuration ).
An OS server can only run on a server operating system which has been released for PCS 7.
You can find additional information on this in the
Readme documentation.
● Install the necessary PCS 7 components.
In the "Program Packages" dialog of the PCS 7 Setup, select the "OS Server" check box
or, if the OS is to swap out data to the Process Historian, the "OS-Server for Process
Historian" check box.
● Make the necessary settings.
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA
Failure, switchover and reintegration of high availability components
The data from the circular log of OS Server 1 is transferred or migrated to Process
Historian.
You can find additional information on this in the documentation
Historian Installation Notes .
7.10 Guide to updating a redundant OS in runtime
Process control system PCS 7; PCS 7
SIMATIC; Process
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