Its very hard to understand what your question is so I'll answer the only one I could identify.
Problem: Where are the files and which type of files are these.
When you publish a datasource to tableau server, they go to the server equivalent of \documents\my tableau repository\Datasources\10.5\ on the server C drive. They will either be .hyper or .tde files depending on your version of Tableau.
You will need to remember when publishing your dashboards to also re-publish the datasources using the Server > Publish Data Source > data source menu.