I am working on the bug where the defaults values in the GUI for disk actions don't correspond to the default values in the API/Backend. For example the "wipe after delete" flag defaults to true in the GUI but false in the backend code. Default values are not sent from the frontend to the backend. Please refer to the bugzilla link https://bugzilla.redhat.com/show_bug.cgi?id=845466 After discussing with Michael as to how to approach fixing this, we think the best way to do it would be to fix it in the Backend class businessentities.Disk by replacing primitives with reference types and forcing business logic in the class to set the default values to match the default values in the client. I would appreciate some feedback on this and also on what the default values are for Disk operations on the GUI. Thanks Ravi