Information
In order to ensure ESXi has sufficient storage capacity in which to write the audit logs, audit record storage capacity should be configured.
If a central audit record storage facility is available, the local storage capacity should be sufficient to hold audit records that would accumulate during anticipated interruptions in delivery of records to the facility.
Solution
From the vSphere Client, go to Hosts and Clusters.
Select the ESXi Host >> Configure >> System >> Advanced System Settings.
Click "Edit". Select the "Syslog.global.auditRecord.storageCapacity" value and configure it to "100".
or
From a PowerCLI command prompt while connected to the ESXi host, run the following command:
Get-VMHost | Get-AdvancedSetting -Name Syslog.global.auditRecord.storageCapacity | Set-AdvancedSetting -Value 100