In June 2020, ETH Zurich’s Research Collection will celebrate its 3rd anniversary. The Research Collection serves as an institutional repository for ETH Zurich that can host both publications as well as research data and is run by the E-Publishing team at ETH Library. Publishing research data and advising customers on research data specific questions in the publishing workflow has emerged as a new field of activity for the team. With over 600 research data items published over the last years, we have now gained a good understanding of the actual use cases for publishing data in an institutional repository at a large university for science and technology. We regularly talk to researchers about the incentives and requirements for publishing their data and monitor what kind of data, which formats and file sizes they deposit. In this talk, we would like to share and discuss our insights with the Swiss research data community. We will presents statistics on the types of deposited datasets and talk about the challenges of bridging publishing and preservation requirements in a research data repository. We will also discuss how we set up our workflows for checking datasets for formal quality criteria and compliance with institutional policies. Finally yet importantly, we will give an overview of recently released new features and ongoing development projects such as a new interface that enables ETH researchers to deposit datasets directly from the data management tool openBIS, or a new solution to publish very large datasets via the Research Collection.