Novell BUSINESS CONTINUITY CLUSTERING 1.2.1 - ADMINISTRATION, Руководство администратора

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74 BCC 1.2.1: Administration Guide for OES 2 SP2 Linux
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Table 9-6
Driver Set Summary for a Single-Tree, Three-Cluster Business Continuity Cluster
If one of the clusters is in a different tree, or if the User objects are in a separate eDirectory partition,
you also need to install an instance of the User Object Synchronization driver on a different port for
the two nodes that communicate across the tree (or across the partitions).
Table 9-7 shows Cluster
One and Cluster Two in Tree A (or User_PartitionA) and Cluster Three in Tree B (or
User_PartitionB). The User Object Synchronization driver has been set up for Cluster One and
Cluster Three to communicate across the trees (or across the partitions).
Table 9-7
Three-Cluster Driver Set Example with User Object Synchronization
You install the drivers on each cluster, with multiple instances needed only where the master cluster
talks to multiple clusters and across trees, as shown in
Table 9-8 .
Table 9-8
Driver Set Summary for a Three-Cluster Business Continuity Cluster with User Object Synchronization
When you extend the single-tree example for a four-cluster business continuity cluster, you can set
up similar communications channels for the Cluster Resource Synchronization driver between
Cluster One and Cluster Two, between Cluster One and Cluster Three, and between Cluster One and
Cluster Four. You must assign a separate port for each of these channels, as shown in
Table 9-9 .
Driver Instance Driver Set for Cluster One Driver Set for Cluster Two
Driver Set for Cluster
Three
Cluster Resource C1 to C2, port 2002 C2 to C1, port 2002 C3 to C1, port 2003
Cluster Resource C1 to C3, port 2003
Cluster Resource and
User Object
Subscriber Node
Publisher Node Cluster One Cluster Two Cluster Three
Cluster One
(master node)
Not applicable CR, port 2002 CR, port 2003
UO, port 2001
Cluster Two CR, port 2002 Not applicable No channel
Cluster Three
(master node in the
second partition)
CR, port 2003
UO, port 2001
No channel Not applicable
Driver Instance Driver Set for Cluster One Driver Set for Cluster Two
Driver Set for Cluster
Three
Cluster Resource C1 to C2, port 2002 C2 to C1, port 2002 C3 to C1, port 2003
Cluster Resource C1 to C3, port 2003
User Object C1 to C3, port 2001 C3 to C1, port 2001