We have an 8 node cluster running Server 2016 Data center configured for Hyper V that has been in place for the past year. During this time we have experienced random OS reboots across all nodes. Idrac simply reports an OEM S event and event logs an unexpected shutdown. Based on other user threads of a similar nature the following changes have been made to system profile but to no avail. CPU: Max performanceMemory Frequency: Max PerformanceC1E: DisabledC States: Disabled Server drivers and firmware are up to date.Dell have analysed our logs and have been unable to identify any hardware issues. Hyper V is integral to our business and we are desperate to resolve and stabilise, to the point we are considering buying new hardware and rebuilding. Any suggestions would be gratefully received.