Mastering Active Directory - Second Edition

The Up-To-Dateness Vector (UTDV) table

The UTDV table is maintained locally by each domain controller to prevent unnecessary replications. UTDV also—per NC and domain controller—has a minimum of three UTDV tables. The UTDV table contains the highest UPN value it learned from any connected domain controller per NC basis. This prevents domain controllers from replicating the same changes over and over. For example, if domain controller A received a domain NC from domain controller B, it would update the UTDV table and update the UPN value for it. Based on that, it would not retrieve the same update from the other connected domain controllers. Because of UTDV, domain controllers will not send any data to their replication partners if they have ...