ESXi upgrade pre-check fails due to degraded vSAN health

Products

• VMware vSAN

Issue/Introduction

• Pre-check / remediation for the ESXi patch update fails (e.g. 8.0 U3e to 8.0 U3f), with the following error messages:
  
  Remediation of cluster failed
Health Check for <name> failed
vSAN health test 'SCSI controller is VMware certified' reported an issue for cluster <name>. Check the vSAN health.
  
  
  
  
• The host is already placed in maintenance mode with 'Ensure Accessibility'
  
  
• While performing pre-check using SDDC getting an error as "Cluster Image health with Warning vSAN Helath Test "SCSI Controller is VMware Certified" reported an issue for Cluster ABCD. Check the vSAN Health."
  
  
• vSAN Skyline Health shows alert 'SCSI controller is VMware certified'
  
  

Environment

vSphere vSAN 8.x

Cause

The pre-check/remediation fails due to the vSAN health alert as reported on the cluster:'SCSI controller is VMware certified'.

Resolution

Validate if the SCSI controller is certified in Broadcom compatibility Guide using following link: vSAN I/O Controller

1. If it is, then silence the alert. (Note: This should only be done after positive verification in the computability  guide to prevent actual hardware support issues.)
   
   Cluster > Monitor > vSAN > Skyline Health > under alert 'SCSI Controller is VMware Certified > Click on 'Silence Alert')
   
   
2. Place one vSAN host at a time in maintenance mode with 'Ensure Accessibility' and run 'Remediate' to update the patch.
   
   vSphere Client > vSAN Cluster > Update > Click on '...' under 'Image Compliance'  >  Run 'Remediate'

3. Allow the ESXi host to complete the update.
   
   
4. Remove the host out of maintenance mode.
   
   
5. Repeat the above mentioned steps for other hosts in the vSAN Cluster. 

If not compatible, reach out to the hardware vendor to  replace or update the non-compatible SCSI controller with a model that is certified and listed on the VMware HCL.