EPM System V11.1.2.2 - Sample 2 servers architecture

As I have mentioned before, I am in process of upgrading Hyperion EPM System from V11.1.1.3 to V11.1.2.2. So, the basic requirement was to finalize the architecture.
It helps a lot to understand Hyperion EPM System.

The architecture is based on 5 different layers:

1. Database layer (RDBMS)
2. Foundation layer (Shared Services)
3. Application layer (Hyperion applications - HFM, FDM)
4. Web layer 
5. Client layer (HFM client, FDM client, FR studio, SMartview)