The Symantec Backup Exec for Windows Servers Active Directory Recovery Agent (ADRA) is installed as a separate, add-on component of Backup Exec for Windows Servers.
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.
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Requirements for the Active Directory Recovery Agent
Installing the Active Directory Recovery Agent
How the Active Directory Recovery Agent works
About restoring individual Active Directory and ADAM/AD LDS objects