How to set up active passive Nexus

Hi I am looking for a guide to set up a active passive Nexus Repository Manager Enterprise mit Postgres.
Some month there was a document, but the link does not work anymore.

Can somebody please help me?

Please take a look at our example suggested architectures under Resiliency and High Availability. Not sure if they are the same as the previous document.

Thank you, but I already now that document.

You may want to see this section of our help site - Resiliency and High Availability

Pleases note that PostgreSQL support is limited to Nexus Pro customers.

Hi, I am using Nexus Pro.