Active Directory Time Synchronization with multiple domain controllers on different Hyper-V hosts
By default, when virtual machine is created on Hyper-V host, its clock is "bound" to the virtualization host operating system clock via Hyper-V integration services. If there are two or more virtualization hosts in the same network, it may happen the operating system time on one of the hosts to be different comparing to another host.
INFORMATION TECHNOLOGY | DOMAIN CONTROLLER | HYPER-V
Domain Controller FSMO Role Holders, Transfer and Demote
List of useful resources and brief information
Netdom (part of Windows server support tools)
netdom query /domain:<myDomainName> fsmo
INFORMATION TECHNOLOGY | DOMAIN CONTROLLER