default rbox;

Clients {
  Client box;
};

AS "Application Server" {
  Instance1 vertical {
    Module1;
    Module2;
  };
  Instance2 vertical {
    EAS1 "EAS";
    Module3;
    Module4;
  };
  Instance3 vertical {
    EAS2 "EAS";
    Module5;
    Module6;
  };
};

DBServer "DB Server" {
  DB "Database" drum;
};

Client -> EAS1;
Client -> EAS2;

EAS1 -> Module1 -> Module2;
EAS2 -> Module3 -> Module6;
Module3 -> Module4;

Instance1 -> DB;
Instance2 -> DB;
Instance3 -> DB;