we are using Two Spectro Server and two One Click Server .
One as primary and other as secondary if primary goes down ,secondary will work,
There is any doc ,about CA Spectrum architecture and data flow diagram.
I assume what you’re looking for is in the Distributed SpectroSERVER information which talks about multiple SpectroSERVREs and fault tolerance:
Please note you will not find much in regards to the 2 OneClick servers that you have as Spectrum doesn’t have “failover” for OneClick. Each OneClick is it’s own entity. You could put a load balancer between them if you wanted a seamless experience for your users.