To answer your first question....If it is a T3 unit, yes it has a raid controller. That is the only way they came.
As for checking the config....You will have to have the login and password to do anything. It has been a long time, but if you have forgot or never knew the login and password do a web search. I know some years ago I found information on recovering lost passwords on a T3, but the storage had to be taken offline to do it.