Windows Server 2012 R2 Datacenter contains all features of the windows server 2012 collection and is then the best one for companies and big businesses for ultimate use. It is also very expensive.
This download will give you windows server 2012 R2 Datacenter but use it as you please i reccomned using it in Hyper-V. But it is the same when you virtualize it or use it in company.
You will get a 180 Days free after it will say its not genuine but there is keys and tools to delete these messages and make it a legal copy. Or when in a company you then just have to buy the license for a price determined by Microsoft to make it a legal copy for Copyright laws in a company.
All links are from microsoft and direct downloadable from this site:
Download Windows Server 2012 R2 Datacenter: 64Bit
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