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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)<br />
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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. &nbsp;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
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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

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how do I make sure the second one is a also a global catalog
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how do I make sure the second one is a also a global catalog

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I have a windows 2003 domain server. &nbsp;It runs on an efficient machine.<br />
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We have a not-so-fast server that I decided to use as a backup server. &nbsp;I installed 2003 server on it and executed a dcpromo command. &nbsp;I set it up as a backup controller to the domain.<br />
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How does this work? &nbsp;Is this making my domain more efficient? &nbsp;What if the primary controller goes down? &nbsp;How does this give me an advantage?
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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?

creating an additional domain controller in windows 2003 domain

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).