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Collaboration Services 3.9.1 - User Guide

Getting started with Collaboration Services Organizing objects for synchronization Resolving synchronization conflicts Managing the synchronization process Transport management Fine-tuning and maintenance Backup, restore, and troubleshooting

Synchronization settings for ActiveDirectory objects

Synchronization settings for Active
Directory objects

The Active Directory object synchronization process is as follows:

1
Collaboration Services periodically checks (scans) whether any changes were made to Active Directory objects in your forest.
2
When Collaboration Services finds that the properties of one or more published objects have changed, it creates update packages and sends them to the HQ for distribution to all branch forests that subscribe to the collections those objects belong to.

Use the Active Directory tab of the Synchronization node to adjust the synchronization settings for Active Directory objects.

Figure 6. Active Directory synchronization options

General Settings

On the General page, you can set the time intervals for scanning Active Directory for changes and applying the changes received from collaboration partners.

Publication settings

At the time interval specified in the Query AD for changes every field, Collaboration Services checks whether any changes were made to Active Directory objects in your forest.

The sleep interval between the collection update sessions is specified in the Processing collections interval.

Subscription settings

At the interval specified in the Update AD every field, Collaboration Services applies incoming updates to Active Directory in the forest.

When an original object is removed from a collection you subscribe to, the deletion is automatically synchronized to the subscribing forests and the corresponding objects are hidden from the Global Address List. However, the stub objects themselves are not deleted immediately. Using the Retention time for removed objects option, you can delay deleting the stubs for a specified number of days; if the object is added to another collection during this period, the stub object will be re-used.

Scheduling access to Active Directory

To avoid excessive load on the DCs during production hours, schedule Collaboration Services access to Active Directory for the least busy time periods.

* 
NOTE: Active Directory access schedules must be thoroughly coordinated, especially when some of the collaboration partners are located in different time zones; otherwise, synchronization performance may be poor.
To schedule Active Directory access
1
On the Scheduling page, select the Use Active Directory access scheduling check box.
2
Specify the time intervals when the service is allowed to read and update data in Active Directory.

Limiting the number of Active Directory objects to synchronize

When configuring Active Directory objects synchronization, you can specify the following limits on the Quotas page:

•
Overall maximum number of synchronized Active Directory objects
•
Maximum number of AD objects allowed to be synchronized daily

The maximum number of synchronized directory objects should be coordinated with the following:

•
Hardware resources of the Collaboration Services server, and Active Directory and Exchange servers load in the HQ forest and in the branch forest.
•
Number of the collaboration branches.
•
Number of objects to be published in the collaboration structure.
* 
NOTE: When the specified maximum number of Active Directory objects is reached, no new objects will be added to Active Directory synchronization. In this case, it is recommended either to increase the specified value or to unsubscribe from some collections.
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