Advanced parameters registered by Dell VIBs cannot be removed individually from ESXi

Products

• VMware vSphere ESX 8.x
• VMware vSphere ESXi

Issue/Introduction

In VMware vSphere environments running on Dell hardware, administrators may observe specific advanced parameters in the ESXi configuration that are not present on other hosts. These parameters cannot be deleted or modified individually using standard CLI or UI methods, as they are registered by third-party software packages during installation. 

Examples:

Syslog.loggers.dellfac.rotate

Syslog.loggers.dellfac.size

Environment

VMware vSphere ESXi 8.0

VMware vSphere ESXi 9.0

Cause

The advanced parameters are registered by the `dellfac` VIB during its installation process. Because these parameters are directly tied to the lifecycle of the `dellfac` software package, they remain persistent in the ESXi configuration and cannot be removed without uninstalling the associated VIB.

Resolution

To remove these parameters, you must uninstall the VIB that registered them.

Before doing it,  ensure that the VIBs are not needed/required , this is especially important in a VCF environment, the image compliance in cluster may report compliance issue when a VIB  in images is removed manually.