ScholarSpace, https://scholarspace.manoa.hawaii.edu/, is an institutional repository for UH Manoa research papers, videos, datasets, instructional materials.
ScholarSpace provides long-term preservation of digital files.
ScholarSpace can provide permanent access to data or act as a safe storage space until data are moved to a discipline specific data repository.
The National Science Foundation under the Data Conservancy project is working on issues of data preservation. See https://jscholarship.library.jhu.edu/handle/1774.2/34018 for recent papers on scientific data preservation
CODATA is the Committee on Data for Science and Technology, a committee of the International Council for Science. CODATA publishes an open access journal, Data Science Journal, available at https://datascience.codata.org/
The U.S. National Academies Board on Research Data and Information, see http://sites.nationalacademies.org/PGA/brdi/index.htm, is a national office of CODATA. A list of presentations with associated files is at http://sites.nationalacademies.org/PGA/brdi/PGA_047286.
Purdue University Libraries has a current list of data repositories, searchable by keyword or by browsing. The Open Access Directory also has a list of data repositories available.
See below for a handful of discipline-specific data repositories to view as examples of the range of functionality of the interfaces:
Princeton's Dataspace team created a cost model for long-term data preservation and storage, see DataSpace: A Funding and Operational Model for Long-Term Preservation and Sharing of Research Data by authors Serge J. Goldstein and Mark Ratliff. The cost they project is approximately $5.00 a Gigabyte or $5000.00 a Terabyte.