HP-UX Directory Server 8.1 deployment guide

5.3.1.3 Smart referrals.................................................................................................................64
5.3.1.4 Tips for designing smart referrals...................................................................................66
5.3.2 Using chaining.........................................................................................................................67
5.3.3 Deciding between referrals and chaining...............................................................................67
5.3.3.1 Usage differences............................................................................................................68
5.3.3.2 Evaluating access controls...............................................................................................68
5.4 Using indexes to improve database performance...........................................................................70
5.4.1 Overview of directory index types..........................................................................................70
5.4.2 Evaluating the costs of indexing.............................................................................................71
6 Designing the replication process..............................................................................73
6.1 Introduction to replication..............................................................................................................73
6.1.1 Replication concepts................................................................................................................73
6.1.1.1 Unit of replication...........................................................................................................73
6.1.1.2 Read-write and read-only replicas..................................................................................74
6.1.1.3 Suppliers and consumers................................................................................................74
6.1.1.4 Replication and changelogs............................................................................................74
6.1.1.5 Replication agreement.....................................................................................................75
6.1.2 Data consistency......................................................................................................................75
6.2 Common replication scenarios........................................................................................................75
6.2.1 Single-master replication.........................................................................................................76
6.2.2 Multi-master replication..........................................................................................................76
6.2.3 Cascading replication..............................................................................................................79
6.2.4 Mixed environments...............................................................................................................81
6.3 Defining a replication strategy........................................................................................................82
6.3.1 Conducting a replication survey.............................................................................................83
6.3.2 Replicated selected attributes with fractional replication.......................................................83
6.3.3 Replication resource requirements..........................................................................................84
6.3.4 Managing disk space required for multi-master replication..................................................84
6.3.5 Replication across a wide-area network.................................................................................85
6.3.6 Using replication for high availability....................................................................................85
6.3.7 Using replication for local availability....................................................................................86
6.3.8 Using replication for load balancing.......................................................................................86
6.3.8.1 Example of network load balancing................................................................................87
6.3.8.2 Example of load balancing for improved performance..................................................88
6.3.8.3 Example replication strategy for a small site..................................................................89
6.3.8.4 Example replication strategy for a large site...................................................................89
6.4 Using replication with other Directory Server features..................................................................90
6.4.1 Replication and access control................................................................................................90
6.4.2 Replication and Directory Server plug-ins..............................................................................90
6.4.3 Replication and database links................................................................................................90
6.4.4 Schema replication..................................................................................................................91
6.4.5 Replication and synchronization.............................................................................................92
7 Designing synchronization..........................................................................................93
7.1 Windows synchronization overview..............................................................................................93
7.1.1 Synchronization agreements...................................................................................................93
7.1.2 Changelogs..............................................................................................................................94
7.1.3 Controlling synchronization...................................................................................................94
7.2 Planning windows synchronization...............................................................................................94
7.2.1 Resource requirements............................................................................................................94
7.2.2 Managing disk space for the changelog..................................................................................95
7.2.3 Defining the connection type..................................................................................................95
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