Hi Joe,
 
Thanks for your detailed email.
 
I want the SAP domain to have a separate security policy than the users domain. 
 
So I think I am going to go down to the two tree domain road.
 
So within my forest I have two tree domains.
 
                  o       
               /       \
              /         \
            /            \
 users.dom <->  sap.dom
So therefore, between these two domains exists an automatic tree trust relationship, which means that any resource in the users domain can be accessed no problem from within the sap domain.
 
In the SAP domain I will never have exchange servers.  The SAP domain runs SAP applications which runs on its own database and environment.   Only 5 user accounts exist and these have full admin rights.  These accounts are required  to start the SAP applications and are contained within the SAP app. for its built in security.
 
Thanks Joe and Kenneth.
 
Adam

From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of joe
Sent: 08 July 2004 23:05
To: [EMAIL PROTECTED]
Subject: RE: [ActiveDir] 2 NT4.0 domains to a Forrest

First off, you may want to look into what you can do with that SAP app in the future, your hands are bound in a bad way and at some point you will find yourself between a rock and hard place for something due to it. If you guys wrote the SAP app, work on making it more flexible, if someone else wrote it, it should be configurable unless they wrote it specifically for you which would be unusual I think.
 
Everything presented here would indicate a single forest with multiple domains is fine. Multiple forests with a single domain each would also be fine. From an exchange viewpoint, I had multi-domain forests, things can get messy.
 
For the first option, you would have the option of a parent child relationship or two trees. In almost all cases I recommend parent child relationships (or root, child, child, child, x)  because multiple tree deployments tend to confuse the heck out of most admins and support people and there is already an issue with not a lot of people really understanding what is going on in AD. Most companies DO NOT test their apps in a multi-tree environement and I have seen apps that make assumptions on the naming and tree structures that assume non-disjoint naming and single trees. Also many documents that are written go that way as well and many scripts.
 
For instance if you have two trees in your forest
 
domain1.com
 
and
 
domain2.com
 
And you read a document that says well if your domain is domain2.com then your config container is probably cn=configuration,dc=domain,dc=com instead of saying go to the rootdse and query for the configuration partition. This is slowly getting better but I still do tend to see mistakes like that. Your people supporting the environment would have to be on top of that.
 
From what I see here, I would probably do a two domain single tree single forest deployment. It is the simplest from several aspects. You would have your domain.com which is your main domain and then spin up the sap domain as a child so you get domain.com and sap.domain.com.
 
  joe
 
 


From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of knighTslayer
Sent: Thursday, July 08, 2004 5:40 AM
To: [EMAIL PROTECTED]
Subject: [ActiveDir] 2 NT4.0 domains to a Forrest

Hi,
 
I'm planning to upgrade my NT4.0 domains to Windows 2000.  I have NT domains that have two-way trusts to each other. 
 
The first domain is where all my users, printers, file server and mail servers are and the second domain is just for my SAP applications run.  My SAP servers are completely dependent on the SAP domain to start the services and it is hard coded which accounts from that domain can start them, therefore I must maintain the domain logon, SID and account name.  The SAP domain requires the use of printers and file servers from the user domain.
 
I am making a migration plan where I intend to upgrade my users domain to Windows 2000 Active Directory first and maintain a two-way non-transitive trust to the SAP domain.  I will switch to native mode and then I will upgrade the SAP domain to Active Directory. 
 
However, I am not sure whether to create a new domain tree or create a child domain of the users domain for the SAP domain.  
 
What would be best?  Or would creating a new Forrest and have trust be any better?
 
Thanks
 
Adam

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