There are many different Pointcuts available to server developers. In general, a server can be thought of as playing two roles: Server and Storage.
In the case of a Plain Server, HAPI FHIR itself performs the role of the Server and your Resource Provider classes perform the role of Storage.
In the case of a JPA Server, HAPI FHIR itself performs both roles. This means that SERVER_xxx Pointcuts may be intercepted by interceptors on any HAPI FHIR server. However, if you want to intercept STORAGE_xxx Pointcuts on a plain server, you will need to trigger them yourself.