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We've got two servers:<br />
1) SBS 2011 - Functions as application, file, Exchange server. (domain controller)<br />
2) WIN 2012 - DB server.<br />
<br />
We've reached almost 65 users (max 75) on the SBS '11 and as you can imagine the i/o and memory consumption on this machine is intense especially when the RAM's limited to 32GB.<br />
<br />
I want to leave Exchange on the SBS and migrate the rest to the WIN 2012 srv.<br />
This means i only have to acquire CAL's for the WIN 2012 srv and don't have to buy Exchange 2013 with the very expensive Exchange CAL's.<br />
<br />
So my question is,can we have change the 2012 srv into the domain contoller and leave the SBS 2011 as the Exchange mail server?
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We've got two servers:
1) SBS 2011 - Functions as application, file, Exchange server. (domain controller)
2) WIN 2012 - DB server.

We've reached almost 65 users (max 75) on the SBS '11 and as you can imagine the i/o and memory consumption on this machine is intense especially when the RAM's limited to 32GB.

I want to leave Exchange on the SBS and migrate the rest to the WIN 2012 srv.
This means i only have to acquire CAL's for the WIN 2012 srv and don't have to buy Exchange 2013 with the very expensive Exchange CAL's.

So my question is,can we have change the 2012 srv into the domain contoller and leave the SBS 2011 as the Exchange mail server?

Server migration

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.

Windows Server 2012

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.