Repositories play a major role in research data management, because they are not only used for the long-term preservation of data and thus serve as a way to make research output openly available in the long term. They may also be used to share and collaborate on research results during the lifetime of research projects. In this paper, the different roles of repositories in research data management are considered from various perspectives: from the points of view of the respective research institutions, the funding bodies, the research support agencies and the researchers themselves. Current practical examples will be used to briefly outline the present repository landscape, and abstracted use cases will provide an insight into the requirements of research projects with regard to data storage and archiving. The current offerings at the University of Vienna will be highlighted as well as current desiderata in the area of research data management.