The Symantec Backup Exec 2010 Active Directory Recovery Agent (ADRA) is installed as a separate, add-on component of Backup Exec 2010.
With ADRA you can use Granular Recovery Technology (GRT) to restore individual Active Directory objects and attributes without performing an authoritative or non-authoritative full restore. You can also restore individual Active Directory Application Mode (ADAM) and Active Directory Lightweight Directory Services (AD LDS) objects and attributes.
More Information
Requirements for the Active Directory Recovery Agent
About installing the Active Directory Recovery Agent
How the Active Directory Recovery Agent works
About restoring individual Active Directory and ADAM/AD LDS objects