ICOS intends to set up and operate its own community data repository, with a design based on the Open Archival Information System (OAIS) reference model. The intention is to apply for Data Seal of Approval (DSA) status for the ICOS repository. In OAIS terms, the repository functionality will include most of the main functions of a data archive: Ingestion, Management and Access, as well as relevant parts of the Administration, Preservation Planning and Management layers. Long-term archival storage is foreseen to take place at an external trusted data center operating the EUDAT B2SAFE service.