Understanding How AD Avoids Full Synchronization of Global Catalog with Schema Changes

In the original version of Active Directory, any schema modifications forced a complete resynchronization of the GC with all DCs across an enterprise. This made it extremely ominous to institute any type of schema modifications because replication modifications would increase significantly following schema modifications. Windows Server 2003 and later AD DS environments do not have this limitation, however, and schema modifications are incrementally updated in the GC.

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