AD domain controllers are the main components responsible for the organization's identity infrastructure. Failure of the domain controllers or the services will impact the entire identity infrastructure. Therefore, as with any other critical system, the AD server's high availability is crucial. There are two types of disasters related to AD domain controllers that can occur.
The first type of disaster is when there is a complete system crash due to faulty hardware. Apart from the AD backup, maintaining multiple domain controllers helps organizations to recover from such situations easily without a backup restore. If it's not the flexible single master operation (FSMO) role holder, we can forcefully remove the crashed domain controller's related records and introduce a new domain controller. If it's the FSMO role holder, we can seize...
