An application slows down every month-end. You open Hyper-V Manager, the virtual machine looks healthy, and the ticket closes without a cause. Next month it happens again. Native consoles show live state and keep no history behind it, so nobody can prove whether the fault was the guest, the host, or a storage path shared with nine other workloads. That gap sets what a Hyper-V deployment costs to run, measured in unplanned downtime and in engineering hours spent guessing. This guide covers.