In our farm we have several workflows that reference AD in order to figure out in the process of a workflow who it should be sent to next based on a job role.
Recently we had one of our DC's replaced during the day and this caused havoc with several of the work flows running because they kept reaching back to try and resolve users through the DC that had been taken down for maintenance.
This got me wondering, can the UPA in SharePoint 2013 be pointed to a certain DC to pull its info from? If so how is this possible? I have seen a PowerShell command:
http://technet.microsoft.com/en-us/library/ff681014.aspx#restrictComm
Set-SPProfileServiceApplication $upa -UseOnlyPreferredDomainControllers $true
How do you define which DC is preferred? This isn't clear and would help us from seeing errors in our workflows.
Thanks!
BJ