
Cascading Replication
233
Figure 8.3. Multi-Master Replication (Four Masters)
Multi-master configurations have the following advantages:
• Automatic write failover when one supplier is inaccessible.
• Updates are made on a local supplier in a geographically distributed environment.
NOTE
The speed that replication proceeds depends on the speed of the network. Plan changes
and directory configuration accordingly, and realize that changes to one directory may not
be quickly replicated to other directories over slow links, such as wide-area networks, in
geographically-distributed environments.
For the procedure to set up multi-master replication, see
Section 8.5, “Configuring Multi-Master
Replication”
.
8.2.3. Cascading Replication
In a cascading replication scenario, one server, a
hub
, acts both as a consumer and a supplier. It holds
a read-only replica and maintains a changelog, so it receives updates from the supplier server that
holds the master copy of the data and, in turn, supplies those updates to the consumer. Cascading
Summary of Contents for DIRECTORY SERVER 8.0
Page 18: ...xviii ...
Page 29: ...Configuring the Directory Manager 11 6 Enter the new password and confirm it 7 Click Save ...
Page 30: ...12 ...
Page 112: ...94 ...
Page 128: ...110 ...
Page 190: ...Chapter 6 Managing Access Control 172 4 Click New to open the Access Control Editor ...
Page 224: ...206 ...
Page 324: ...306 ...
Page 334: ...316 ...
Page 358: ...340 ...
Page 410: ...392 ...
Page 420: ...402 ...
Page 444: ...426 ...
Page 454: ...436 ...
Page 464: ...446 ...
Page 484: ...466 ...
Page 512: ...494 ...
Page 522: ...504 ...