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:
- Standalone array—In a standalone
array, the configuration settings are stored in a configuration
store on the array manager server. This storage method, which is
also used to store settings on a standalone Forefront TMG server,
is similar to the Configuration Storage Server (CSS), which was
used to store configuration settings and enterprise policies in ISA
Server 2006 Enterprise Edition.
- Array managed by Enterprise Management
Server (EMS)—In an array that is managed by an EMS, the
configuration settings are stored on the EMS.
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.