http://technet.microsoft.com/library/gg712264.aspx#BKMK_CreateSMContainer Create the System Management Container Configuration Manager does not automatically create the System Management container in Active Directory Domain Services when the schema is extended. The container must be created one time for each domain that includes a Configuration Manager primary site server or secondary site server that publishes site information to Active Directory … Read more

http://technet.microsoft.com/en-us/library/bb633121.aspx To extend the Active Directory schema using ExtADSch.exe Create a backup of the schema master domain controller’s system state using the NTBACKUP utility. To start the NTBACKUP utility, click Start, click Run and type ntbackup. Ensure that you are logged on to the schema master domain controller with an account that is a member … Read more