Two Domain Controller in the same site

[RMAZOUZI]

Hello,

Please should be informed that we have a main Domain Controller DC01 and Add a secondary DC02

i have a question 

01-Does shoud not affecte user athentification and their data profil

02-when the DC01 will be faulty does users must reach the their profil envirement through authentification using DC02.

Windows 2016 Server

[#2 · Accepted solution]

Adding an additional domain controllers to your domain does not effect user authentication. not sure what you mean by data profile? If the first DC has issues, users will authenticate to the second DC until the first DC is available again. At that moment, sessions will be on either of the two DC's

[#3]

Thanks for your support. your response is logical.