Lync server 2010 supports distinct server roles:

  • Standard Edition Server
  • Front End Server and Back End Server
  • A/V Conferencing Server
  • Edge Server
  • Mediation Server
  • Monitoring Server
  • Archiving Server
  • Director

For most server roles, for scalability and high availability, pools of multiple servers can be deployed. Each server in a pool must run an identical server role or roles. For some types of pools in Lync Server, a load balancer must be deployed to spread traffic between the various servers in the pool. The table below provides a scalability overview for all server roles when installed on physical servers.