I find myself in an uncomfortable position that needs to be resolved asap.
Senario: Small (50 user) network running One SBS 2003 R2 acting as Domain controller. No Exchange. This server currently provides user account authentication and file sharing. Obviously as is now, if/when this server goes down we have a serious problem on our hands.
I assume that the best way to handle this would to add another Domain server? If so, can the most recent Microsoft server (2008?) "plug in" to our aging 2003 R2 domain and act as backup? Are there any special/complicated things that need to be done to make this work? Would a matching amount of client access licenses need to be purchased for the new server software?
Please advise, I this one server setup keeps me awake at night!