I have a, hopefully, simple question regarding licensing on Windows Server 2012 Datacenter that I haven't been able to answer on my own, or I'm not confident in the answers I found in my research. The basic situation is we are moving a new client over to inhouse email to get them HIPAA compliant. They have around 70 or so users so SBS is out, this means I need to two servers, one running AD and the other running exchange. Well what I am thinking to accomplish this is that I will have a single physical server running a couple of VMs, one of the VMs will be running AD on Server 2012 standard and the other will be running Exchange 2010 on Server 2012 standard. (If anyone notices any issues in this setup then feel free to point them out as well lol) My questions regarding licensing are outlined below. Thanks in advance for any help :)
1. From what I've read Datacenter lets you have unlimited virtual machines. I don't think this means it comes with unlimited licenses to install several images of server 2012 right? That just means you can buy an unlimited number of licenses and then install however many server images you want provided you pay for them?
2. Providing that the above condition is true does this mean that on Server 2012 if you enable only Hyper-V on the native OS you get to have a guest OS as part of the native license, meaning that I would need only one more license for the second guest OS?
3. Is server 2012 the best choice for both guest operating systems?
4. I setup the quote for 70 Exchange user CALs and plus the 5 included with Exchange itself so it comes out to 75, giving them about a 5 user breathing room, and the same with the user CALs for Server 2012 itself to account for the AD side of it. Is this correct or am I way under or over?
I think that about covers it, thanks again.