The Deactivation Phase

If a software product is taken out of service, it is mostly necessary to convert the available data to a format that can be processed by the succeeding software product, or to make it accessible in some other ways. If the data cannot be converted easily, e.g. because it is stored in a proprietary format, this may have an impact on economic sustainability of an organization.
In this phase, even the backup size of data matters, e.g. if legal regulations require long-term storage of data.