When a messaging engine is created, it uses a file store by default. You can configure the file store attributes according to your requirements.
You set up a messaging engine to use a file store by accepting the default choice of message store when you are creating a bus and adding a new bus member. You can choose either to accept the default settings that the administrative console displays, or to make changes to these settings. After the file store has been created, you can, if required, then make changes to the file store settings.