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For that, the built-in utility is DC Diagnostic Tool or DCDIAG. The second aspect is the health monitoring of AD Database, which is NTDS.DIT. Real Time monitoring and alerting is a must for Domain Controllers, which includes disk space, CPU, memory utilization, services, events etc.System Event Logs should be checked on a regular basis.Sufficient disk space should be available in system drive and all other drives.Make sure they are stable from the Hardware and OS perspective.Domain Controllers should be patched on regular basis, two minimize security vulnerabilities and to increase stability.The first aspect is the health of the Domain Controller Server. Now, a few points related to Domain Controllers health management. There are two aspects of Domain Controller's health management. However, please avoid RODC if it is not required. Otherwise, you may consider deploying a Read Only Domain Controller (RODC). Always ensure the physical security of your Domain Controllers.
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