How to Convert ADC into DC

[Imran]

Dear Friends

I have 3 server on LAN. One is DC Another is ADC & third one is proxy.
Now the problem is that when I Dissconnect my DC from LAN & make make new
Account in ADC then its give me error it say the catalog server is not
avaiable. & when i open my DC its make new account succesfully. now my
company requirement is that Remove DC from LAN. Use only two machine on LAN
so pls help me how can i solve this problem. how can i convert ADC machine
into DC.



***Suppose just think my windows 2ks Where i installed DC. the operating or
file system has been Corrupted.****

Thanxz In Advanced

 

[Matjaz Ladava [MVP]]

Hmmm. Under ADC you mean Active Directory Connector, Active Directory
Controller,... ? I think that both servers are DC's, but one of them is not
a global catalog server. You can designate a server to be a GC by opening AD
Sites and Services, locating a server and in properties of NTDS settings of
the server object check Global Catalog check box.

--
Regards

Matjaz Ladava, MCSE, MCSA, MVP
Microsoft MVP - Active Directory
(e-mail address removed), (e-mail address removed)
http://ladava.com

 

[Imran]

ADC means Additional domain controller ...
Now my requirement is my Domain Controller is not available on LAN But ADC
is Available . LAN user connect succesful through ADC but the problem is
that when i Make a new account on ADC then it give me error .
The error is that:
Active Directory
*************
Windows cannot validate the uniqueness of this proposed user name with a
global catalog server because:
The server is not operational.
Windows will create this user account, but the user can log on only after
the user name is verified to be unique. For further assistance, contact
your system administrator.
**************
Thanxz in advanced
ADNAN AHMED
KOHINOORGROUP

 

[Matjaz Ladava [MVP]]

Is that additional DC also a global catalog server ? Also you must make
sure, that both your DC's are also DNS servers, so that the clients/servers
can locate DC's on your network.

--
Regards

Matjaz Ladava, MCSE, MCSA, MVP
Microsoft MVP - Active Directory
(e-mail address removed), (e-mail address removed)
http://ladava.com

 

[Imran]

NO ADC is not a global catalog server.Dc is a Global Catalog server..SImple
is that how to convert ADC into DC if DC is not available pls pls & pls
Give me Instruction Step by STep

IN winnt we say if PDC has been Down THen BDC automatically work like PDC
...... i want this
Thanxz

 

[Katherine Coombs]

Imran,

It sounds as though you're a little confused as to the way that Windows 2000
works.
Domain Controllers keep a copy of the directory. In Windows NT 3.51 and 4.0,
there are two kinds of Domain Controllers-Primary Domain Controllers (PDCs)
and Backup Domain Controllers (BDCs). Primary Domain Controllers hold a
read/write copy while Backup Domain Controllers hold a read-only copy. In
Windows 2000, all Domain Controllers for a given domain hold a writeable
copy of the directory. There is no distinction between primary and backup;
all domain controllers are equal. This is why when your "DC" is taken off
the network, users can still authenticate against your "ADC".

To achieve what you want, I would suggest making both of your domain
controllers into global catalog servers and DNS servers. If your "DC" also
holds the FSMO roles and it fails, you will need to seize those roles on the
"ADC", but if you haven't made your "ADC" into a GC you will run into a
world of hurt. If your "DC" has been taken off the network, put it back on
the network and make your "ADC" into a GC and DNS server before removing
your "DC."

Cheers, katherine

 

[Imran]

Thanxz Katherine Coombs & Matjaz Ladava .
you both are right. I make taken a mistake i make GC to ADC now it working
fine...
THANX