I've got a server running with dual quadcore processors (2 x Intel Xeon L5609), with Windows Server 2008 R2 Standard edition running on top.
The Windows Server Editions Comparison Guide shows that Standard edition can use "X64 Sockets : 4" only. From other documentation, this refers to the amount of logical processors, multiplied by 64 (256). Not exactly sure what this means..
I'm also seeing 8 cores in Task Manager, but I'm unsure if that's physical cores or hyperthreaded duplication.
Can Windows Server 2008 R2 Standard handle only 4 physical cores? Or is the restriction to do with Hyper-V/Virtual machines (which I've seen a lot of google noise about)
Edit: According to a random technet post "Windows Server 2008 Standard Edition can support up to four physical processors, regardless of the number of cores on each processor". I assume that R2 should be the same, but is there any official documentation to back this up?