Windows Server 2012 introduced a new feature with the DHCP Service: the built-in DHCP Failover Cluster. This function was requested for a long time.
Before Server 2012, if you want to failover your DHCP, two possibilities:
- Create a real cluster, and add the DHCP role.
- Split the scope between two servers. With Server 2008, a Wizard simplifies this task.
In Windows Server 2012, it is really simple to add High Availability for DHCP Service. Each server can release lease to client and the information is synchronised between all failover members.
Let’s see how to implement the Failover Configuration: