Monitor Global Catalog Replication Progress

Applies To: Windows Server 2008, Windows Server 2008 R2

You can monitor inbound replication progress to see the percentage of completeness of partial, read-only, directory partition replication to the new global catalog server.


Although you can change occupancy level requirements for global catalog advertisement to force advertisement to occur before full replica occupancy, doing so can cause e-mail and search issues. Exchange servers use the global catalog for Address Book lookup. Therefore, in addition to causing Active Directory client search problems, the condition of a global catalog server being advertised before it receives all partial replicas can cause Address Book lookup and e-mail delivery problems for Exchange clients.

Membership in Domain Users and the right to log on locally to the domain controller is the minimum required to complete this procedure. By default, members of Account Operators, Administrators, Enterprise Admins, Domain Admins, Backup Operators, Print Operators, and Server Operators have the right to log on locally to a domain controller. Review details about using the appropriate accounts and group memberships at Local and Domain Default Groups (

To monitor global catalog replication progress

  1. Open a Command Prompt as an administrator: On the Start menu, right-click Command Prompt, and then click Run as administrator. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.

  2. At the command prompt, type the following command, and then press ENTER:

    dcdiag /s:<servername> /v | find "%"

    Parameter Description


    Specifies the name of the global catalog server that you want to monitor.

    /v | find "%"

    Finds the percentage of replication, and provides extended information.

  3. Repeat this command periodically to monitor progress. If the test shows no output, replication has completed.