Backup Domain Controller (BDC)

Domain Controllers within two Sites

I am currently investigating sites within AD. The configuration which I am looking at doing is having two DC within the main site (top of the tree) and one DC in the new site created. If for some reason with the new site the DC server goes down will the clients still be able to login using the DC...

3 sites, How to setup Active directory

Hey guys, I am deploying a network for a business, here is the plan There are 3 sites A,B,C site A: 43 clients, all the servers are in a rack in the basement site B: 20 clients site C: 20 clients i want AD fcourse but i'm wondering if it is possible to use site A domain controller as PDC, and...