Fan Redundancy in VMware Host Client Displays “Redundancy lost” Despite System Health Being Normal

Products

• VMware vSphere ESXi
• VMware vCenter Server 8.0

Issue/Introduction

^{In the VMware Host Client, the Fan Redundancy health sensor may display the following status:}

• ^{Current reading: Redundancy lost}
• ^{Health Indicator: Green (Healthy)}

^{This inconsistency can cause confusion, as the system appears healthy, but the fan redundancy warning is still displayed.}

Environment

^{VMware vSphere Esxi 8.x}

^{VMware vCenter Server 8.x}

 

Resolution

^{There is no impact on actual hardware functionality. The issue is a UI anomaly in the Host Client and can be safely ignored if:}

• ^{The system fan health sensor reports green (healthy)}
• ^{The esxcli command output shows "Fully Redundant" in the Computed Reading.}

^{Recommended Actions:}

• ^{Use the vSphere Client (HTML5) to cross-check hardware health status.}
• ^{Run the following command for accurate sensor data:}

^{esxcli hardware ipmi sdr list}

Additional Information

• ^{This is a false alert and does not indicate an actual hardware failure.}
• ^{Please refer to the VMware Host Client Release Notes for more information.
  🔗 VMware Host Client 2.18.0 Release Notes}