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What is the role of Additional domain controller. How ADC takeover the DC. Is there a need to change the DNS ip on domain computers to ADC IP
What is the role of Additional domain controller in a domain. How ADC takeover the DC. Is there a need to change the DNS ip on domain computers to ADC IP.
I've setup a additional domain controller in my network, but when i shutdown the DC , ADC don't takeover the DC.
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by: Chris-DentPosted on 2009-04-06 at 08:41:15ID: 24078478
It doesn't "take over" as such. When multiple DCs are configured they share the load, except for the 5 FSMO roles neither has any advantage over the other.
For your additional Domain Controller to be effective it must be:
1. A Global Catalog
- Set in AD Sites and Services in the Properties for NTDS Settings under the Domain Controller
2. A DNS Server
- Install the service and wait for replication to occur. All AD Integrated zones will appear from there.
Without those two you're still entirely reliant on the first DC. And once done that adds a third requirements:
3. Clients must refer to both as DNS servers in their TCP/IP configuration
Of course there's no provision for redundancy in the DHCP service, any client rebooting will not get an IP Address if the first DC is also hosting DHCP.
Chris