PowerStore: Pre-Upgrade Health Check (PUHC) to detect non-redundant NVMe drive paths
Summary: The Pre-Upgrade Health Check (PUHC) checks the system for non-redundant NVMe drive paths that are either failed or missing. On a system with NVMe expansion enclosures, when upgrading from PowerStoreOS version 3.x or later, NDU may fail with non-redundant NVMe drive paths. The off_release_ens24_drive_missing_path_check PUHC detects this and prevents NDU from failing. ...
Symptoms
The PowerStore health check (PUHC) may fail with the following error: "Drives in ENS24 enclosure are missing redundant paths. KB#000242170. Please contact your service provider. (off_release_ens24_drive_missing_path_check)".
The health check is an off-release PUHC check that is contained in the Health Check thin package downloaded from the Dell Drivers and Downloads site. See the Additional Info section for information about the Health Check thin package.
Example of PUHC check detecting this issue:

Cause
NDU may fail on the appliance, if the appliance has failed or missing NVMe drive paths.
Resolution
To resolve this issue, contact technical support for assistance. Reference KB# 000242170 for expedited attention and resolution.
Additional Information
For more information of PUHC checks, see KB 000214752 PowerStore: Landing Page for In Market (off-release) System Health Checks and KB 000192601 PowerStore: How to Check the Health of the Cluster Before Software Upgrade Using Pre-Upgrade Health Check and System Check.