Research data are the scientific – and often also economic – capital of the future. It is therefore all the more important to store and archive this data in a manner appropriate to its origin. For this purpose, data must be prepared according to FAIR criteria; and, whenever possible, open access to the data (open data) should be available. For this purpose, it should be stored in discipline-specific data formats or in formats suitable for long-term archiving in repositories suitable for the content. Particular attention should be paid to the quality of these repositories: Quality features are, for example, a storage guarantee of ten or more years, the allocation, and management of persistent identifiers or their data security management. Where personal data are processed, proper anonymisation / pseudonymisation of the data must be ensured before archiving.