https://msdn.microsoft.com/en-us/library/bb727049.aspx?f=255&MSPPError=-2147217396



DCDIAG: How to Check Domain Controller Health:

https://activedirectorypro.com/dcdiag-check-domain-controller-health/


https://u-tools.com/help/Dcdiag.asp


https://community.spiceworks.com/t/dcdiag-errors-on-new-domain-controller/607809


Secondary Controller Server 2008:


https://community.spiceworks.com/t/adding-secondary-2008-r2-domain-controller-to-2008-standard-domain/240619


https://www.elmajdal.net/win2k8/setting-up-an-additional-domain-controller-with-windows-server-2008/