Linux/BSD/Apache servers account for 70% of the Internet servers in the world according to the latest stats from
netcraft . These figures suggest that it is the best, most secure and most stable platform. I don't think there are any disadvantages, given the alternatives. It has been suggested that BSD is more stable and more secure than Linux as the base.
Do a Google search for implementing an Apache server with RH as there are hundreds of these howto's out there.