For maximum performance and scalability, it is recommended that you modify the Internet Information Service (IIS) thread limits after creating a Communicator Web Access (2007 R2 release) virtual server. This is especially important if your Communicator Web Access server will need to handle more than just a few hundred simultaneous connections.

To configure virtual server thread settings

  1. Log on to the computer that is running Communicator Web Access as a member of the local Administrators group and the RTCUniversalServerAdmins group.

  2. Click Startand then click Run.

  3. In the Rundialog box, type wbemtestand then press ENTER.

  4. In the Windows Management Instrumentation Tester, click Connect.

  5. In the Connectdialog box, type root\default\rtccwa_repositoryin the Namespacebox, and then press ENTER.

  6. In the Windows Management Instrumentation Tester, click Open Class.

  7. In the Get Class Namedialog box, type MSFT_CWASiteSettingin the Enter Target Class Namebox, and then press ENTER.

  8. In the Object Editor for MSFT_CWASiteSettingdialog box, select Hide System Propertiesand then click Instances.

  9. All of the virtual servers installed on the computer will be displayed in the Query Resultdialog box. To view the properties for a particular virtual server, double-click the server name.

  10. In the Object Editordialog box, select MaxThreadLimitand then click Edit Property.

  11. In the Property Editordialog box type 12in the Valuebox and then click Save Property.

  12. In the Object Editordialog box, select MinThreadLimitand then click Edit Property.

  13. In the Property Editordialog box, type 3in the Valuebox and then click Save Property.

  14. In the Object Editordialog box, click Save Object.