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Some add'l items to consider:
Per Microsoft "Active Directory servers must be restored offline. The system must be restarted in Directory Services Restore mode. In this mode, the operating system is running without Active Directory Domain Services and all user validation occurs through the Security Accounts Manager (SAM) in the registry."
And:
"Nonauthoritative restore: Use this process to restore AD DS to its state at the time of the backup, and then allow Active Directory replication to update the restored domain controller to the current state of AD DS."
"Authoritative restore: Use this process to recover objects that have been deleted from AD DS. Authoritative restore does not allow replication to overwrite the restored deletions. Instead, the restored objects replicate authoritatively to the other domain controllers in the domain."
Either restore type requires first booting the domain controller into DSRM.
Good reading prior to attempting AD restores:
Introduction to Administering Active Directory Backup and Recovery
http://technet.microsoft.com/en-us/library/cc816677%28v=ws.10%29.aspx
Steps for Backing Up and Recovering AD DS
http://technet.microsoft.com/en-us/library/cc753359%28v=ws.10%29.aspx
- Performing a Nonauthoritative Restore of AD DS
http://technet.microsoft.com/en-us/library/cc730683%28v=ws.10%29.aspx
- Performing an Authoritative Restore of Deleted AD DS Objects
http://technet.microsoft.com/en-us/library/cc755296%28v=ws.10%29.aspx
Restart the Domain Controller in Directory Services Restore Mode Locally
http://technet.microsoft.com/en-us/library/cc816897%28v=ws.10%29.aspx
Restoring the System State on Windows
http://www.symantec.com/docs/HOWTO34578
How to Perform Authoritative restore
http://www.symantec.com/docs/TECH127788
System requirements for Active Directory granular NetBackup backups and recovery
http://www.symantec.com/docs/HOWTO86243
Restoring Active Directory from Backup Media
http://technet.microsoft.com/en-us/library/cc961934.aspx