In Forefront TMG, the configuration settings of all servers in an array are stored in a central location, in an Active Directory Lightweight Directory Service (AD LDS) storage.

The storage location depends on the type of Forefront TMG array, as follows:

In both array types, AD LDS is also installed locally on all Forefront TMG array members, and is disabled when the Forefront TMG server joins the array. Array members access either the array manager (in the standalone array) or EMS (in the EMS-managed array) to update configuration settings, and enterprise and array policies.

For more information, see About Forefront TMG arrays.