creating an additional domain controller in windows 2003 domain

I have a windows 2003 domain server.  It runs on an efficient machine.

We have a not-so-fast server that I decided to use as a backup server.  I installed 2003 server on it and executed a dcpromo command.  I set it up as a backup controller to the domain.

How does this work?  Is this making my domain more efficient?  What if the primary controller goes down?  How does this give me an advantage?
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Radhakrishnan RSenior Technical LeadCommented:

To get a better understanding of additional domain controllers and it's use, please have a look at this article

This might help you :)
Seth SimmonsSr. Systems AdministratorCommented:
it gives you an advantage because you have the redundancy if the first domain controller goes down (and make sure the second domain controller is a global catalog)

with both servers running DNS, your clients can have both configured so that there won't be any issues if the first one is not available.  it's always a best practice to have more than 1 domain controller to avoid a single point of failure - though it isn't a substitute for backups; you should still do that regularly
al4629740Author Commented:
how do I make sure the second one is a also a global catalog
Seth SimmonsSr. Systems AdministratorCommented:
go into active directory sites and services

when it opens, drill down through the site, then expand servers, then the server name then on the right, right click ntds settings and select properties.  check the global catalog box.

within the next replication period, you will see an informational event (event id 1119) in the directory services log in event viewer stating the server is now a global catalog

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Windows Server 2003

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