Recipe 17.4 Finding the Replica Servers for an Application Partition

17.4.1 Problem

You want to find the replica servers for an application partition.

17.4.2 Solution Using a graphical user interface
  1. Open ADSI Edit.

  2. Connect to the configuration naming context of the forest the application partition is in, if it is not already present in the left pane.

  3. Expand the configuration naming context and click on the Partitions container.

  4. In the right pane, right-click on the crossRef object that represents the application partition and select Properties.

  5. Under Attributes, select the msDS-NC-Replica-Locations attribute. Using a command-line interface
> ntdsutil "dom man" conn "co to se <DomainControllerName>" q "list nc replicas[RETURN]
<AppPartitionDN>" q q Using VBScript
' This code displays the DN of each domain controller's 
' nTDSDSA object that is a replica server for the
' specified app partition
' Fully qualified DNS name of app partition 
strAppPart = "<AppPartitionFQDN>"   ' e.g.
' ------ END CONFIGURATION ---------

set objRootDSE = GetObject("LDAP://RootDSE")
strBase    =  "<LDAP://cn=Partitions," & _
              objRootDSE.Get("ConfigurationNamingContext") & ">;"
strFilter  = "(&(objectcategory=crossRef)(dnsRoot=" & strAppPart & "));" 
strAttrs   = "msDS-NC-Replica-Locations;"
strScope   = "onelevel"
set objConn = CreateObject("ADODB.Connection")
objConn.Provider = "ADsDSOObject"
objConn.Open "Active Directory Provider"
set objRS = objConn.Execute(strBase & strFilter & strAttrs & strScope)
if objRS.RecordCount <> 1 then
   WScript.Echo "Did not find a match for application partition " & _
   if objRS.Fields("msDS-NC-Replica-Locations").Properties.Count > 0 then
      Wscript.Echo "There are no replica servers for app partition " & _
      Wscript.Echo "Replica servers for app partition " & strAppPart & ":"
      for each strNTDS in objRS.Fields("msDS-NC-Replica-Locations").Value
         WScript.Echo " " & strNTDS
   end if
end if

17.4.3 Discussion

The list of replica servers for an application partition is stored in the multivalued msDS-NC-Replica-Locations attribute on the crossRef object for the application partition. This object is located in the Partitions container in the configuration naming context.

17.4.4 See Also

Recipe 17.3 for adding and removing replica servers

    Chapter 3. Domain Controllers, Global Catalogs, and FSMOs
    Chapter 6. Users
    Appendix A. Tool List