what is the role in dynamics ax system administrator
I must ask you again to explain in detail what you need from us. For example, do you mean what job system administrators perform or do you have a question about the security role?
I've already moved your question to a separate thread and set a title. I would use a better title and add tags, but I'm not sure what you actually mean; maybe I'll update it later when you give us more information.
You might find these articles useful.
Business Applications communities