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Calculate size of large Active Directory

Posted on 2008-06-24
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Last Modified: 2012-05-05
We are in the process of creating a new AD for our organization. It would be single forrest, single domain, multiple sites topology (alas, i have no control over this decision). I am trying to spec the DC hardware and i am wondering if there is any tool like adsizer for windows 2008 server? Or is there any other way to calculate the size of the AD on disk? The ad will have about 25000 users, 4500 exchange mailboxes and about 30000 computer accounts and about 250 OUs. There will be about 36 or so sites. There will be 4 main DCs and 35 RODC in different physical locations. To recap i am trying to figure out the diskspace needed to store the AD db.
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Question by:i686
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KCTS earned 1500 total points
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Microsoft have a tool called ADSizer (originally provided in the Win2000 ResKit http://support.microsoft.com/kb/927229), which estimates the size of AD based on parameters you supply
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by:i686
ID: 21853652
Yes, I know. I have this tool. But it's designed for win 2000 server and exchange 2000, not windows 2008 server and exchange 2003. Is there something similar in the windows 2008 server reskit?
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by:KCTS
ID: 21906549
Not that I know of - but AD size and tolpolgy is not that different, giebn that this is a very "aproximate" tool
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