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Scenario 1: Using a Single PSE for ALL
Components 
In this scenario, you create a single PSE for all components. Create the PSE on a single component and copy it to the other servers. See the graphic below:
Copying a Single PSE to all Server Components

The initial configuration is easier in this case. All of the components share the same security information, and you do not need to exchange their public keys to establish the necessary trust relationships.
Transparency decreases which makes analyzing problems more difficult. All of the components have the same PSE and Distinguished Name, and therefore it is more difficult to determine which PSE is actually referred to in error messages or in trace information.