The Italian solar data archives: national and European perspectives

We discuss the present status of the solar data archives geographically distributed in the Italian Astronomical Observatories of the National Institute for Astrophysics (INAF). In particular, we describe the national project SOLARNET (SOLAR NETwork) aimed at federating all the Italian solar archives as a distributed database, the first step toward an Italian Virtual Solar Observatory (IVSO), and the European Grid for Solar Observations (EGSO) project, which is under implementation to construct the basis for a large solar archive federation based on the Grid architecture to provide the scientific user with advanced resources such as a solar feature catalogue.