Windows Small Business Server 2003 mora da bude glavni domain kontroler, i ne mogu da postoje dva SBS na jednom domainu. Ako nisi podesio SBS da bude domain kontroler, od instalacije imas 7 dana fore, i tada ti OS krene gasiti sistem po random vremenu. Pretpostavljam da je ista stvar kad se nađu dva SBS-a na istom domainu.
Zbog ovih ograničenja je SBS jeftinij od klasičnog 2003 server standard.
A evo i šta kaže wikipedija:
Windows Small Business Server has the following design restrictions: [2]
* Only one computer in a domain can be running Windows Small Business Server.
* Windows Small Business Server must be the root of the Active Directory forest.
* Windows Small Business Server cannot trust any other domains. It cannot have any child domains.
* Windows Small Business Server is limited to 75 users or devices depending on which type of CAL.
* All Windows Small Business Server versions up to SBS 2003 are limited to 4 GB of RAM.
* Windows Small Business Server versions prior to Windows Small Business Server 2008 are only available for the x86 (32-bit) architecture.
* Windows Small Business Server 2008 will only be available for the x86-64 (64-bit) architecture. This is due to the requirements of Exchange Server 2007, whose production version is 64-bit only. The 32-bit version of Exchange Server 2007 is only supported for testing and non-production scenarios.
* Only the Remote Desktop for Administration mode is available because Small Business Server always runs on the domain controller, and only two simultaneous RDP sessions are allowed. (Change from SBS 2000 policy)[3] Terminal Services in application sharing mode needs to be run on a second server on the network. This however is possible with SBS 2008 Premium edition which includes a Windows Server 2008 license for running the second server.
* To remove these restrictions and upgrade to regular editions of Windows Server, Exchange Server, SQL Server and ISA Server, there is a Windows Small Business Server 2003 R2 Transition Pack. [4]