After looking at the levels used by various groups, we have decided on 4 levels for our preservation plan. We want to keep it simple so that it is not difficult to determine and that it is meaningful for our workflows. Our Rosetta preservation system is a dark archive that can harvest digital materials from several publicly accessible content management systems. The curator or subject specialist for the collection will determine the level of preservation together with the preservation priority and will indicate that on the Digital Preservation Decision Form.
The Preservation Levels
0. No preservation. Regular backups only (for example: Shared network drive that is backed up regularly by IT)The intention is to recognize that some materials do not need full preservation services, nor long term storage in DPN. We will evaluate the levels next year and see if they are working the way we expect.
1. Basic preservation. A copy on M-Disc in Special Collections besides an access copy in our CMS, which is backed up by IT. No other preservation processing
2. Full preservation. A master copy in Rosetta, with format migration, descriptive and preservation metadata, fixity checks, multiple copies (tape, data center, Granite Mountain Vault)
3. Extended preservation. Full preservation services plus either DPN or remote/internet storage copy for materials that are appropriate for DPN