Explanation/Reference:
In Managed Server Independence mode, a Managed Server looks in its root directory for the following files:
* msi-config.xml-a replica of the domain's config.xml.(Even if the domain's configuration file is named something other than config.xml, a Managed Server in MSI mode always looks for a configuration file named msi-config.xml.)
* SerializedSystemIni.dat
* boot.properties-an optional file that contains an encrypted version of your username and password.
Note: When a Managed Server starts, it tries to contact the Administration Server to retrieve its configuration information. If a Managed Server cannot connect to the Administration Server during startup, it can retrieve its configuration by reading configuration and security files directly. A Managed Server that starts in this way is running in Managed Server Independence (MSI) mode Reference: https://docs.oracle.com/cd/E13222_01/wls/docs81/adminguide/failures.html