Editing Data migration (section)

== Migration as a form of digital preservation ==
Migration, which focuses on the digital object itself, is the act of transferring, or rewriting data from an out-of-date medium to a current medium and has for many years been considered the only viable approach to long-term preservation of digital objects.<ref>{{cite journal|author1=van der Hoeven, Jeffrey|author2= Bram Lohman|author3=Remco Verdegem|title=Emulation for Digital Preservation in Practice: The Results|journal=The International Journal of Digital Curation|volume=2|issue=2|year=2007|pages=123–132|url=http://www.ijdc.net/index.php/ijdc/article/view/50|doi=10.2218/ijdc.v2i2.35|doi-access=free}}</ref> Reproducing brittle newspapers onto [[microform|microfilm]] is an example of such migration.

=== Disadvantages ===
* Migration addresses the possible obsolescence of the data carrier, but does not address that certain technologies that use the data may be abandoned altogether, leaving migration useless.
* Time-consuming – migration is a continual process, which must be repeated every time a medium reaches obsolescence, for all data objects stored on a certain media.
* Costly – an institution must purchase additional data storage media at each migration.<ref>{{cite journal|author=Muira, Gregory|title=Pushing the Boundaries of Traditional Heritage Policy: maintaining long-term access to multimedia content|journal=IFLA Journal|volume=33|year=2007|issue=4|pages=323–326|doi=10.1177/0340035207086058|s2cid=110505620|url=http://www.ifla.org/files/assets/hq/publications/ifla-journal/ifla-journal-4-2007.pdf}}</ref>