So, after some study … I got it !!
I can say that creating the simulator helped a lot on all topics related to disk an cluster in Exadata context. What I couldn’t well test (and answers reflected that) is all stuff related to real hardware, ports, EM configurations (docs are quite confused about OMS, Agent, Agent Plugin).
But, by the way, I hit the target!
/*+ esp */
Dba Esp 