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Creating Backup Domain Controller

Last Modified: 2015-03-31
DHCP Server in DC1/PDCIPCONFIG from Workstation PCHi,

  I have SBS2011 as DC in a single domain network and created a backup domain controller in Windows 2012 server.
  OS                 Computer Name     IP Address     Role
  *******       **************     **********   ***********************
  SBS2011       DC1                     Primary Domain Controller
  Win2012       TS2                      Backup Domain Controller

  After adding Active Directory Service & DNS Service and running DCPROMO in Win2012, I see the same contents in DNS and Active directory on both computers.
  (1) Now my question is if I should I add in DHCP server in SBS2011/DC1 so that workstation PCs show two IP addresses ( and under DNS server when I run IPCONFIG /all?
  If I don't add the IP address of the backup domain controller in DHCP server , then the workstation PCs can't log in to the network or surf the internet if my SBS2011/DC1 goes down right?

  (2) Is it necessary to add PDC IP address in DNS server section of Backup Domain Controller's TCP/IP Property and add BDC IP address in DNS  server section of Primary Domain Controller's TCP/IP Property?
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