I install WP SDK on my Windows Server 2012 without any problems. Did you have any troubles?
PS. But as I know not all CPU are compatible.
Question
According to system requirements I can install SDK only on Windows 8 machine (I need support Windows Phone 8 platform too).
I want to create build server for WP applications, so can I use Windows Server for that?
Solution
I install WP SDK on my Windows Server 2012 without any problems. Did you have any troubles?
PS. But as I know not all CPU are compatible.