One of the gaps between Azure Stack Hub users' requirements and Azure Stack Hub’s feature is Resource health. Azure Stack Hub doesn’t support Resource Health, so users can’t detect whether a hardware-related issue caused their downtime or not.
In this situation, if the user can know a host node where the user’s VM runs on, the user can detect Host Node’s failure or the maintenance of Host Node Indirectly. Fortunately, Windows Server running on Hyper-V can confirm the hostname of Host Node by the following registry key: