Microsoft Windows Server 2012 R2 Datacenter – 16 core

Licensing info: A minimum of 8 core licenses is required for each physical processor and a minimum of 16 core licenses is required for each server. Hence, this license can activate up to 2 physical processors. Standard Edition provides rights for up to 2 Operating System Environments or Windows Servers containers with Hyper-V isolation when all physical cores in the server are licensed. For each additional 1 or 2 VMs, all the physical cores in the server must be licensed again.
Download – Product key and installation instructions are emailed after purchase.
Windows Server 2012 R2 provides a wide range of new and enhanced features and capabilities spanning server virtualization, storage, software-defined networking, server management and automation, web and application platform, access and information protection, virtual desktop infrastructure, and more.