Siemens Simatic PCS 7 Function Manual page 96

High availability solutions in PCS 7
4.5 Solutions for OS servers
Redundancy connection
You need the following components to make the redundancy connection, depending on the
distance to be bridged:
Maximum distance
10 m
100 m
1000 m
Availability
The availability of the complete system is ensured even if one of the two OS servers fails
because the two OS servers form an independent redundancy node.
Note
The buses marked with * (terminal bus and plant bus) can be configured redundantly with
optical or electronic switch modules.
Additional information
● Section "Network components (Page 56)"
● Section "How to configure an OS server and its redundant OS partner server (Page 152)"
● Online help for
● Documentation on the Process Historian
96
Required components
Null modem cable
● Crossover network cable
● Per server: A free network connection (see
section "Network components (Page 56)")
Fiber-optic cable
Per server:
● A free network connection
(see section "Network components
(Page 56)")
● 1 Ethernet cable
● 1 media converter
(e.g., SCALANCE X101-1)
WinCC ; WinCC Redundancy
Connection
Serial connection
Ethernet connection
Ethernet connection
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA