Join EBS 2008 to existing domain


So it seems EBS is a rather new product, and I couldn't find much on the knowledge database about my problem, so here is my question to you, Experts !

My client currently has an SBS 2003 x86 running on his domain, doing almost everything, it's now getting really overloaded and getting closer to the point of no return.

I have been looking for different solutions, the more expensive being Windows Server 2008 Standard and add to it SQL Server 2008 Standard as well as Sharepoint Services (plus migrating a few services from the SBS). This sounds great, but very costly.

Another cheaper option is to use Windows Essential Business Server 2008 in x64, add it to the domain, and have it take over SQL and Sharepoint (plus Antivirus and File Server).

My question is: Will EBS and SBS play along nicely, or is EBS another SBS in disguise, which HAS to take most of the key roles by force (DNS, DC, DHCP, Exchange, etc...) ? Can it act nicely as a Secondary DC without being the Primary ?

I know two SBS cannot coexist on the same network, but what about an EBS and an SBS ?

Anyone with any ideas or knowledge, feel free to share.

Thanks a lot in advance !
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rindiConnect With a Mentor Commented:
No, EBS is the same as SBS, it has to be at the root of the Domain.

Also it might not be as cheap as you think, as it requires 3 servers, One forefront, one exchange and one management server (3 PC's).

You can overcome this by using something like VMware and setting your servers up as VM's. For that you still need a 64bit PC for the server, enough RAM (at least 8GB) and a fast raid, like raid 10.
Lee W, MVPConnect With a Mentor Technology and Business Process AdvisorCommented:
And of course, HyperV works - and EBS is supported to run ENTIRELY on Virtual machines using one physical box (I'd prefer having at least two physical boxes, but that's me).

Also, in EBS, the FSMO roles are split between two of the EBS servers.  So, rindi said, you cannot have SBS and EBS coexist in the same domain.  

But there should be an SBS to EBS upgrade path - though I don't know the details.
YcareAuthor Commented:
Thanks a lot guys for the prompt feedback ! Now I'm back to the drawing board XD
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