What is the optimal domain controller to users ratio for a site using Windows Server 2008 R2?
We currently have around 160 users with 2 domain controllers at a site. We have some monitoring software running and it is showing over 60 LDAP connections to the each server. I am going to add another domain controller to the site but I was wondering what the correct ratio of domain controllers to users is. We are going to implement some network intensive applications so I'm assuming the LDAP connections will only get higher after that.