Designing the forest structure
The Active Directory design starts with designing the forest structure. The Active Directory forest is the security boundary for the identity infrastructure. When you deploy the first domain controller in your infrastructure, it creates a forest as well. So, every Active Directory infrastructure has at least one forest.
There are two types of forest implementations:
- Single forest
- Multiple forest
Single forest
Single forest deployment is the default deployment mode. Most business models fit into the single forest model. Complexity and cost of implementation are low in this model. One of the main things you need to consider in this mode is replication. Domains are used to partition the directory and manage the replication. But forest-wide data, such as schemas, still needs to be replicated across all domains. If replication involves with branch offices, you need to make sure forest-wide replications are handled properly.
Multiple forest
The multiple forest model is...