Adding Server to SBS2003 Domain

I have 35 users and installing SBS 2003 server.  I am having to use an old IBM Server 4GB RAM, 2.4Ghz Intel and 2-250GB Drives (will use software RAID) for the SBS machine.....There is already a Windows 2003 Server on the network that is not a DC. SBS will be running Exchange, but not ISA. Management wants to make good use of the existing server....and I would like to use it to assist in some of the tasks of SBS if possible... How do I add it to my SBS Domain?  and can you think of anythjing it could be used for to help take the load off User Logons, File Storage etc etc.  I guess I am asking how can I make the best use of this extra Server...I am looking for ideas.
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Jerry SolomonNetwork  AdministratorCommented:
The most common use of the "old" server in an SBS environment is as a Terminal server for remote access--you will need to purchase TS licenses to do this, though.  Its hard to do much more with it, as SBS by design does all of the work for the domain, and keeps all roles.
Direct from the SBS Homepage:
Q. Can I separate the components of SBS 2003 R2; for example, install Exchange or SQL Server on another server?
A. You may not separate the software for use on more than one operating system environment under a single license, unless expressly permitted. This applies even if the operating system environments are on the same physical hardware system, such as by using virtualization technology.

So you cannot seperate Exchange or SQL from the main SBS, but you can run additional servers as domain controllers.  If you add a server to the domain and then promote it to a DC, the SBS and the new DC will auto-magically start load-balancing logon requests, etc... on the network.

Remember that Active Directory relies heavily on DNS, so make sure you feel comfortable with configuring DNS servers before starting.

Also, ISA server cannot run on SBS 2003.  You will need to have a different server running Windows Server 2003 in order to run it.  Your Win2K3 server might be perfect for it :)

From SBS Home Page on Microsoft:
Q. Can I install ISA 2006 on SBS 2003 R2?  
A. No. There have been significant changes to the ISA product architecture, and the configuration and management tools unique to SBS 2003 R2 do not support the new version. If you require the new enterprise-level features found in ISA 2006 such as Web proxy chaining, you should consider installing a separate server running Windows Server 2003 and ISA 2006.

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You can use it as a file server, terminal server, web server (IIS), WSUS, etc. It all just depends on what your company needs. You can use it as a test server if you want to try stuff out before you actually do it on the production server.
There are a few things it cannot be due to SBS 2003, but like stated about there are plenty of things it can be.
I hope this helps. Good luck.
FreshmanGuruAuthor Commented:
When you say add to the domain ...I am assuming you meanthe server  will join the SBS Domain just as the workstations do. I have never used more than one server on the same domain...just curious what this looks like.  Is there a tool for replicating Active Directory if I use the old server as a DC ...or does it (like you say Auto magically happen?) Thanks for the in depth answer.
From your Windows Server 2003 box (Not the SBS) go to the run command and type in "DCPromo".  That is the wizard to create a domain, or add a Domain Controller to an existing domain.  As long as everything is at the right version/revision, this promotion should go without any kind of a hitch (But you should keep an eye on the Application and System Logs from both systems for a couple of weeks).  But this upgrade, can cause serious issues on your network if your not configured properly beforehand.  Make sure you feel comfortable diagnosing domain issues before performing this promostion.  

You should become familiar with tools like DCDiag, DomainPrep, and ForestPrep.  Network Admins toolkit essentials.  And I can't stress enough the need for a good solid DNS server.  Everything on a Windows Network relies on it :)
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