This document discusses building research data management services from a data librarian's perspective. It defines research data management and outlines developing an institutional RDM policy involving researchers, librarians, and IT staff. The author discusses the University of Edinburgh's library-led RDM policy as an example. The document also covers supporting researchers through training, guidance, and tools for data management planning and sharing. It proposes additional library RDM services like data repositories, archiving, and metadata standards expertise. Challenges for librarians expanding into this new domain are also addressed.