I need to extend the AD in order to support end-user recovery via DPM 2010 as described below. Can someone please tell me if this process is reversible? I may need to "undo" this later and need to know if it is as simple as removing the container? Configuring Active Directory Domain Services to support end-user recovery involves four operations: Extending the schema Creating a container Granting the DPM server permissions to change the contents of the container Adding mappings between source shares and shares on the replicas DPM administrators who are both schema and domain administrators in the Active Directory Domain Services domain can complete these steps with a single click in DPM Administrator Console (Which is why I have requested someone with SA/DA privilege’s to come down to my office to perform this task). DPM administrators who are not schema and domain administrators can complete these steps by directing a schema and domain administrator to run the DPMADSchemaExtension tool. The DPMADSchemaExtension tool is stored on the DPM server in the folder Microsoft DPM\DPM\End User Recovery. A user who is both a schema and domain administrator can run the tool on any computer running Windows Server 2003 that is a member of the domain in which the DPM server is deployed. The administrator must specify the name of the DPM server when running the tool. If you use the DPMADSchemaExtension tool to enable end-user recovery, you must run it once for each DPM server. Reference: http://technet.microsoft.com/en-us/library/ff399743.aspx Ron Finnegan DHHS NIH NIMH LNT

Hello, schema changes are not reversable. Uninstallation is documented here: http://technet.microsoft.com/en-us/library/ff399644.aspxBest regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Hi, In Active Directory, Schema extensions are not reversible. Attributes or classes cannot be removed after creation. For more information, please refer to: Extending the schema http://technet.microsoft.com/en-us/library/cc759633(WS.10).aspx Regards, Bruce This posting is provided "AS IS" with no warranties, and confers no rights. Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.