TDA Governing Principles
TDA Governing (Operating) Principles
- The Records Retention Schedules define the collecting scope of the TDA.
- The TDA will contain born-digital materials acquired by TSLAC and materials digitized by TSLAC
- Three copies of electronic records will be maintained on different instances in geographically dispersed locations.
- A primary goal of the TDA is the preservation of the content of the record. The preservation of the original “look and feel” of the original source will be considered and reviewed on a case by case basis.
- When digitizing historic records from the TSLAC collection, originals will be kept in the collection after digitization.
- TSLAC may undertake a distributed custodial model for some digital materials. Not all digital objects will be stored in the TSLAC TDA, but the metadata for those objects will be stored in an TSLAC-managed system. TSLAC will set up guidelines for distributed systems and means of monitoring those systems.
- The TSLAC TDA will not be a dark archive. Objects in the repository will be available for use, although access to specific objects may be restricted to specific users according to the Public Information Act.
- At a minimum, the original normalized object, the most recent migrated version and the next-to-the-last migrated version will be kept. Other intermediary versions may be discarded, and in some cases all versions may need to be retained.
- TSLAC will not provide or maintain special software required to access materials in the TSLAC TDA (e.g., for audiovisuals or computer applications) unless arrangements have been made prior to ingest of the records.