(Optional)Configure an Active Directory site in the SMB context.
(Optional)Configure a preferred domain controller in the SMB context.
Enable NTP, or ensure that the clocks of the appliance and domain controller
are synchronized to within five minutes.
Ensure that your DNS infrastructure correctly delegates to the Active
Directory domain, or add your domain controller’s IP address as an additional
name server in the DNS context.
Go to Configuration > Services > Active Directory and click Join
Domain.
Configure the Active Directory domain, administrative user name, and
administrative password.