Windows Server 2012 R2 includes the “Desktop Experience” feature, which installs Windows 8.1 components (Media Player, Sync Center, etc.). The Privacy Statement notes that installing Desktop Experience enables client telemetry that is otherwise absent in a pure Server Core installation . For any production Server 2012 R2 system, avoid installing Desktop Experience unless absolutely required. If installed, immediately run the Disable-WindowsErrorReporting PowerShell cmdlet and set telemetry to 0 via GPO.
Sample concise privacy statement (text to display in install documentation) Windows Server 2012 R2 includes the “Desktop Experience”
On Server 2012 R2: CEIP is disabled by default, but if previously enabled via tools, disable it via: Server Manager > Local Server > Customer Experience Improvement Program > Off but if previously enabled via tools