This video demonstrates how to troubleshoot “SSO log directory full” warnings in vCenter Server Appliance 6.0. This is a known issue affecting vCenter Server Appliance 6.0, and currently, there is no resolution. You see that the /storage/log directory is highly utilized in an Embedded vCenter Server Appliance or Platform Controller Server Appliance 6.0.
To work around this issue, reduce the maximum backup size and the maximum backup index in the log4j.properties file.
Note: In external Platform Service Controller (PSC) environments, log in to the Platform Service Controller instead to make the suggested changes.