You can configure Active Directory so Shared Services can perform a static host name lookup or a DNS lookup to identify Active Directory. Static host name lookup does not support Active Directory failover.
Using the DNS lookup ensures high availability of Active Directory in scenarios in which Active Directory is configured on multiple domain controllers to ensure high availability. When configured to perform a DNS lookup, Shared Services queries the DNS server to identify registered domain controllers and connects to the domain controller with the greatest weight. If the domain controller to which Shared Services is connected fails, Shared Services dynamically switches to the next available domain controller with the greatest weight.
Note: | DNS lookup can be configured only if a redundant Active Directory setup that supports failover is available. See Microsoft documentation for information. |