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How many computers per domain Windows 2000?

Posted on 2004-09-13
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Last Modified: 2010-04-13
How many computers can you have in one domain?  Is there a limit or rule of thumb?

Secondary question:

If I query the pdc for computer accounts and there is another domain that is trusted by the queried pdc will the computer accounts for both domains show up or just the specific pdc that I queried?

Thanks!
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Question by:bluedragon99
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Lee W, MVP earned 500 total points
ID: 12046020
There is no PDC in Active Directory.  If you query a DC you'll get the info for that domain only.

As for the "limit"

Check out the following article from Windows IT Pro magazine:
http://www.winnetmag.com/Windows/Article/ArticleID/42605/42605.html

Here's an excerpt:
The AD limits exist primarily to optimize AD's performance—they relate only marginally to the number of objects you can have. For example, the maximum number of user accounts possible in a Windows NT domain was 40,000. The number of user accounts possible in an AD domain is huge. I don't know the absolute maximum, but Korea.com (an Internet portal providing a range of Web services to Korean citizens) has an 8-million-user-account AD implementation.

Each user, computer, printer, contact, etc is an object in Active directory.  You can be fairly certain that if korea.com has 8 million user objects, that you can get at least a million or more user/computers/printers combination out of it.

You may need several domain controllers for authentication, but that is really relative to the power of the DCs - single CPU 500 MHz?  Quad CPU 2GHz? 256 MB RAM?  16 GB RAM?  The only way to know for sure is to establish a baseline and adjust your network accordingly

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