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Migration Scenarios
The next step involves enabling the replication agreements to and from the new master and
initializing the master if necessary.
6.0 Master A
5.x Master B
6.0 Hub A
6.0 Hub B
6.0 Consumer A
6.0 Consumer B
Placing the 6.0 Master Into the Topology
FIGURE 4–12
Check that the replication on all hubs and consumers is in sync with the rest of the topology
before migrating another master. A server that has just been migrated does not have a change
log, and can therefore not update servers that are out of sync. Allow the topology to stabilize and
all servers to synchronize before migrating the next supplier server.
Migrating a Replicated Topology to a New Topology
Before you start migrating replicated servers, determine whether your deployment might not be
better served by changing the architecture of the topology. This section describes how to
migrate a basic version 5 topology to a new all-master topology. Migrating to an all-master
topology involves migrating the consumers, hubs, and masters, then promoting the hubs to
masters and the consumers to hubs, then to masters. The following sections demonstrate a
sample migration of a simple multi-master topology to a new all-master topology.
The following figure shows the existing version 5 topology.
Chapter 4 • Migrating a Replicated Topology
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