On each Active Directory Active Sync resource, Identity Manager defines an onError process that is called when a failure occurs during the synchronization of a resource. If an Active Directory resource defines an on-error process, this process is called if there errors occur when the poll method is called on the resource during active synchronization. This process checks the result from the IAPI objects, and if an error occurs, calls the defined process.
Configure this process to notify an administrator through email when an error occurs. Include the error text in the email body so that the administrator can determine if the error warrants that Identity Manager fails over to another domain controller.
Using the error text, the administrator is alerted to a potentially lengthy outage or an outrage due to a temporary, quickly resolved issue (such as a temporary routing issue that is resolved by the next poll attempt).
If the domain controller returns an error that warrants failing over to another domain controller, run the Active Directory Synchronization Failover task from the Task page.
For manual fail-over mode, the fail-over task requests
The name of the downed domain controller or resource
The name of the DC hostname to fail over
The timestamp of the collected HighestCommittedUSN value to use
You also must choose whether to restart Active Sync after the switch to a new domain controller is complete.
When executed, the Active Directory Synchronization Failover task