Microsoft Entra ID
FundamentalsConcepts Replica Sets
In brief
The documentation now states that replica sets require connectivity between all virtual networks hosting them. They are deployed in one Active Directory site and rely on a fully meshed virtual network topology for directory replication.
What Entra admins need to know
Ensure virtual networks hosting replica sets have the required connectivity and fully meshed topology.
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Documentation change
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All replica sets are placed in the same Active Directory site. As the result, all changes are propagated using intrasite replication for quick convergence.
@@ -22,6 +22,9 @@ You create each replica set in a virtual network. Each virtual network must be p All replica sets are placed in the same Active Directory site. As the result, all changes are propagated using intrasite replication for quick convergence. +> [!IMPORTANT]+> Microsoft Entra Domain Services replica sets require network connectivity between all virtual networks hosting replica sets. Replica sets are deployed within a single Active Directory site and rely on a fully meshed virtual network topology to support directory replication. Network architectures that don't provide direct connectivity between replica-set virtual networks can cause authentication, domain controller communication, and Netlogon-related issues for applications and services that depend on Microsoft Entra Domain Services. Review replica-set networking requirements before deploying workloads across multiple regions.+ > [!NOTE] > It's not possible to define separate sites and define replication settings between replica sets.