Active Directory Sites and Services

The current AD toplogy in my Window 2008 + 2003 are designed as below. They are all generated automatically.

USDC001 is another site is the bridgehead server to replicated data from DC01 in another site.

1. How does AD determine to use DC01 rather than DC04 to synchronize with USDC001 ? Which settings should I set ?

2.  DC01 will be decomission. So, should I manually add DC04 under "USDC001" before demote it ? Tks

Active Directory Sites and Services
       DC04 (NTDS Settings -> DC02)
       DC01 (NTDS Settings -> DC04 & USDC0001

       USDC01 (NTDS Settings -> USDC001)
       USDC001 (NTDS Settings -> USDC01, DC01)
Who is Participating?
MaheshConnect With a Mentor ArchitectCommented:
Will you are not promoting dc01 again with new version ?

In reality you don't have to do anything special for TWO sites active directory

Because AD choose one server for every site as bridge head server automatically unless you set it manually

Do not set bridge head server manually
The setting can be found under AD site\server container\server object properties
if you set it manually and if that server get failed within site, then AD will not choose another server as new bridge head server, hence do not alter that setting and remain it as is so that AD can select bridge head server automatically and select another if 1st one dies

Also in order to generate proper connection objects you need to configure site links properly
Since you have only two sites, you must be having only one IP site link (i.e. Default IP site link)
So you don't have to do anything as both sites must be member of that site link
Just ensure that both sites are member of default IP site link

If you want you can manually configure connection objects in AD sites and services, but its not required

Just ensure that you remove old domain controller properly with all its traces (this includes its Host(A) records, NS records, connection objects etc) and promote new DC properly, so you will get all well set

AXISHKAuthor Commented:

Lastly just forgot to mention that assign all network subnets to proper AD site in AD sites and services so that domain controllers will report to appropriate active directory sites

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