Red Hat DIRECTORY SERVER 8.1 - DEPLOYMENT Deployment Manual page 161

Multinational Enterprise Replication Design
9.2.5.1. Supplier Architecture
For the Example Corp. intranet, each locality stores the master copy of its data and uses database
links to chain to the data of other localities. For the master copy of its data, each locality uses a multi-
master replication architecture.
The following diagram illustrates the supplier architecture for Europe, which includes the
dc=exampleCorp, dc=com and dc=com information:
Figure 9.13. Supplier Architecture for Example Corp. Europe
Each locality contains two suppliers, which share master copies of the data for that site. Each locality
is therefore responsible for the master copy of its own data. Using a multi-master architecture ensures
the availability of the data and helps balance the workload managed by each supplier server.
To reduce the risk of total failure, Example Corp. uses multiple read-write supplier Directory Servers at
each site.
The following diagram illustrates the interaction between the two supplier servers in Europe and the
two supplier servers in the US:
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