Hypercheck: HyperFlex and Pre-Upgrade Check Tool - Hyper-V
The Hypercheck : Hyperflex Health & Pre-Upgrade Check Tool - HyperV are automated health and pre-upgrade checks that are designed to ensure your clusters are healthy before you upgrade. It is imperative that this healthcheck is not just performed, but that you take corrective action on any cluster that is found to be unhealthy. Correct all issues reported by the Hypercheck health check before continuing.
Hypercheck : Hyperflex Health & Pre-Upgrade Check Tool - HyperV (HyperFlex Versions 3.5 and later) https://www.cisco.com/c/en/us/support/docs/hyperconverged-infrastructure/hyperflex-hx-data-platform/216027-hypercheck-hyperflex-health-pre-upgr.html