So i'm preparing to move from AD query to Identity Collector.
Installed the software on 2 domain controllers for redundancy.
All working fine for the domain controller on which the software is installed, but the other one is not.

"Unable to connect, please check connectivity ....."
Actually, i added our 4 DC as identity sources but only planning to install IC on 2 of them since this is enough for redundancy purpose.
Are you supposed to only add the DC where Identity Collector has been installed on, as identity source?