Siemens Simatic PCS 7 Function Manual page 225

Procedure - Phase 1
Note that you will need to work alternately on Server_1 and Server_2.
Phase 1 / 1. Server_2: Deactivate and exit WinCC
● Deactivate WinCC Runtime and exit WinCC on the standby Server_2.
The system reacts as follows:
– Client_1 remains interconnected with Server_1.
– Client_2, which has Server_2 configured as the preferred server, changes over to
– Server_1 detects a failure caused by deactivation of Server_2. If you have configured
Phase 1 / 2. Server_2: Backup of the PCS 7 project; backup 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 1 / 3. Server_2: 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.
Note that Windows administration of PCs should be performed by a Windows administrator.
You can find a detailed description of the PCS 7 installation and the required PCS 7-specific
settings for PC stations in the manual
Configuration .
Phase 1 / 4. Server_2: If you want to use encrypted communication after the software update:
Activate "Encrypted communication" with migration mode. You can find information about this
in the documentation
Phase 1 / 5. ES: Download OS connection data and OS target system
● Open
● Right-click on the OS to be transferred in the open PCS 7 project below the WinCC
application. Select the menu command PLC > Download to Current Project > Selected
Station in the shortcut menu.
This starts the transfer from the ES to Server_2.
Phase 1 / 6. Server_2: Start WinCC
● Start WinCC on Server_2.
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA
Failure, switchover and reintegration of high availability components
Server_1.
system alarms, Server_1 generates a process control message to this effect.
Process Control System PCS 7; PCS 7 PC Configuration .
NetPro and download the connection data from the ES to Server_2.
7.10 Guide to updating a redundant OS in runtime
Process control system PCS 7; PCS 7
Process Control System PCS 7; PCS 7 PC
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