Open Archival Information System OAIS ISO 14721 2003

Open Archival Information System (OAIS) ISO 14721: 2003 a reference model … to establish a system for archiving information, both digitalized and physical, with an organizational scheme composed of people who accept the responsibility to preserve information and make it available to a designated community.

Digital Preservation: a series of managed activities necessary to ensure continued access to digital materials for as long as necessary. It refers to all of the actions required to maintain access to digital materials beyond the limits of media failure or technological change … Long-term - Continued access to digital materials, or at least to the information contained in them, indefinitely. Medium-term - Continued access to digital materials beyond changes in technology for a defined period of time but not indefinitely. Short-term - Access to digital materials for a defined period of time while use is predicted but which does not extend beyond the foreseeable future and/or until it becomes inaccessible because of changes in technology. (Beagrie and Jones 2002) 2

Consultative Committee for Space Data Systems Scalability? It scales up really well. . . Courtesy NASA/JPL-Caltech Foundation of many (all? ) DP systems research

Data creator (producer) process Data user (consumer)

Archive Submit Picture from DLib Disseminate

Diagrama 6

OAIS: Core Functions • • • Negotiate for appropriate content Obtain sufficient control to manage content Determine the scope of the designated community Ensure independent utility of data Follow procedures for preservation Disseminate data to a designated community 7

the actors Management Who are your producers? Who are your consumers?

the objects Management What do your producers produce? What do your consumers consume? What information will help submission? What information will help dissemination? What will information will help preservation?

Diagrama: 4 things not obvious from the diagrams. . . US N BO IDE SL 1. 2. 3. 4. not a production-line process … SIP: AIP: DIP not necessarily 1: 1: 1 relationship not necessarily all one agency not all of this has to exist simultaneously 10

Functional model: seven components of OAIS • • Common Services Ingest Archival Storage Data Management • Administration • Preservation Planning • Access 11

7 main components

Ingest 13

Archival Storage

Data Management

5. Administration

6. Preservation Planning 17

Preservation Planning? US N BO IDE SL PLATO preservation planning tool http: //www. ifs. tuwien. ac. at/dp/plato/intro. html 4 stage process: • • Define requirements Evaluate actions Analyse results Build and execute plan Preservation Test bed Library of preservation plans 18

7. Access

Data creator (producer) Data user (consumer) “The better you are at digital preservation: the less people will notice. ”