Scholarly Data Share (SDS) is a managed data-sharing service. It provides access to large curated research datasets stored in a tape archive. Data is stored in the Scholarly Data Archive (SDA) and accessed through a lightweight web interface for search and browse. Data is delivered asynchronously for download. SDS is designed for sustainability over time in cost and effort using existing tool chains and open-source software. Indiana Spatial Data Portal (ISDP) is built using an SDS instance.