In this chapter we reviewed all the elements necessary to develop a disaster recovery plan. We covered how to back up Active Directory and some of the gotchas related to the tombstone lifetime and password change cycles. We then discussed the various options for restoring Active Directory, including restore by replication, authoritative restores, and nonauthoritative restores. We discussed the FSMO transfer process and what is needed to seize FSMO roles. Finally, we delved into some of the maintenance tasks that can be done with the Active Directory DIT files.