PM-QUALITY V11, software DVD, system package type S Professional, with data center for redundancy synchronization of data, executable with SIMATIC WinCC V7 and RT Advanced / RT Professional / Unified single station/multi-user system server runtime software including configuration system, German/English, operating system platform Windows 10 (64-bit), Windows Server 2012 R2 / 2016 / 2019 (64-bit), single license. two licenses required (one per server)