In our world the organisation responsible for saving the records of an organisational unit like documents or other artefacts that gives us our history is the archive. The archives exist in different levels of our society, in companies, in municipalities, in regions and at national levels as national archives. This means that the big difference between a library and an archive is seen in the library being responsible for the printed word. Today when the records are digital records the challenges to keep them has grown from taking care of paper to handling migration of records from obsolete formats, authenticity of the record so its reliable and most of all making sure the record is readable in the future considering format and available hardware.