The 6AV6371-1CF08-0AX0 is Siemens' SIMATIC WinCC/Redundancy, an option for WinCC V8.0. It provides runtime software with a single license, designed for two installations. The license key is supplied on a USB flash drive.
Software Type: SIMATIC WinCC/Redundancy for WinCC V8.0.
License Type: Single license (for two installations).