KB 2143565 Troubleshooting “/storage/log” directory full warning in vCenter Server Appliance 6.0 This video demonstrates how to troubleshoot “SSO log directory full” warning in vCenter Server Appliance 6.0 you see that the “/storage/log directory” is highly utilized in an embedded vCenter Server Appliance or Platform Controller Server Appliance 6.0. This is a known issue affecting vCenter Server Appliance 6.0. Currently, there is no resolution. 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. For additional information, see https://kb.vmware.com/kb/2143565