Where I worked, the servers and their IP's were all kept in a spreadsheet on a drive that could only be accessed by Network Services personnel. As for the logins, it was one login for each user, that would be granted access to whatever it is they managed. None of those were me however, as I was a network guy not a server guy.
Just a reminder, CCNA trained guy here with 1 year of real world experience and an Associates Degree, with a Bachelors coming in about 9 months. Looking for a job... help a brother out. I can't seem to find anything right now.