HP UX Direry Server 6 Designing the replication process, 7 Designing synchronization

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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