Method for producing and managing a large-volume long-term archive

摘要

The present invention relates to a method for producing and managing a large-volume long-term archive which comprises an archive data memory and a management file, and to a corresponding long-term archive. The method according to the invention involves relocating archive data in a container file so that the legal validity of the data is maintained by virtue of qualified signing.

主权项

1. A method of producing and managing a large-volume archive that is composed of an archive data storage medium and a management database, the method comprising the steps of:
selecting archive data based on predetermined traits; relocating the selected archive data from the archive data storage medium to a separate archive data file; deleting the relocated archive data from the archive data storage medium; relocating indices for the selected archive data from the management database to a separate database; deleting the relocated indices from the management database; combining the separate archive data file with the separate database file in a container file; deduplicating entries in the container file by effecting a bit pattern comparison of entries, and replacing identical patterns with links to the corresponding entries in the database; and whenever the archive data involve e-mails having base-64 MIME-encoded attachments, deduplicating these multiple attachments in such a way the MIME encoding is reconstructible for each attachment with bit-level precision by examining the encoding line by line for deviations from a normal form, storing the line length, and storing the reconstruction information for each deduplicated attachment.