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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

Outgoing traffic

To control outgoing traffic, the HQ and branch administrators can specify a maximum outgoing traffic size in megabytes per hour by selecting the Control outgoing traffic check box. As soon as the traffic exceeds the specified limit, sending of new packets is delayed until the traffic drops below the limit, and an appropriate message is logged to the Collaboration Services Event log.

Incoming traffic

To control the incoming traffic, the branch forests and an HQ forest can limit the number of incoming messages and the overall size of the incoming traffic.

Use the Control incoming traffic and Control incoming traffic by number of messages options to protect the service from being overloaded with large amounts of synchronization data:

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If the Control incoming traffic check box is selected, the service will process only a limited amount of synchronization data per hour.
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If the Control incoming traffic by number of messages check box is selected, the service will process only a limited number of incoming messages every hour.
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NOTE: You can use these options to control incoming mail flow to ensure safe service functionality. However, the use of these options may impact the initial synchronization performance significantly, so it is recommended to turn them on only after the initial synchronization is over for all collections.

The HQ forest web interface includes two additional options that can be used to set the bandwidth and quotas for branch forests. These options let the HQ forest administrator specify which message and traffic quotas should be assigned each newly-registered branch forest.

To ensure optimal synchronization performance between all synchronization partners, HQ constantly redistributes the message quota and the bandwidth between the branch forests. The redistribution is performed every hour for each branch.

Collaboration Services uses an adaptive algorithm when redistributing available bandwidth and message quotas between branches. This algorithm is quite complex and takes into account statistical information, such as when the branch was added and its average bandwidth usage.

 

 

 

Fine-tuning and maintenance

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Active Directory synchronization performance
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Resource usage

Active Directory synchronization performance

To improve Collaboration Services performance, first register schmmgmt.dll (located in the \\COMPUTERNAME\admin$\SYSTEM32 subfolder). Then, using the MMC console, add the Active Directory Schema Snap-In to the program group of the Administrative Tool on a Domain Controller and ensure indexing is turned on for the following object attributes:

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proxyAddresses
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mail
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targetAddress
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mailNickName
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Extension attribute used by Collaboration Services for storing data (selected during the Collaboration Services setup procedure—by default, extensionAttribute10)
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