Trip Report: Nestor Winter School LZA

Event: nestor/DPE Winter School 2007 "Praktische Anwendungsfelder der digitalen Langzeitarchivierung"

Gernrode/Harz, 11. -15. November 2007

Participants MPDL: Kristina

For details, please check the Agenda

Digital longterm preservation

 * Methods
 * Emulation: Reproduction of the original hardware, software and operating system
 * Migration: Periodical transfer of the digital material from one (older) hard/software configuration to another (newer) one


 * OAIS Model
 * Presentation of the OAIS Model (Reference Model for an Open Archival Information System), which is a terminological and structural concept for the digital longterm preservation


 * Presentation of the Nestor "Kriterienkatalog vertrauenswürdige digitale Langzeitarchive"
 * Data formats and standards, amongst others the characteristics of picture formats
 * Raster graphics consists of pixels
 * compressed, e.g. TIFF uncompressed
 * uncompressed, e.g. TIFF group 4 (lossless), GPEG and GIV (lossy)
 * Vector graphics describe pictures through geometric forms like lines, circles, etc.
 * The VdW working group has published a list of questions which can support the user in the decision which format to use for which digital object

Existing archival systems
Discussion of existing archival systems
 * 1) Kopal (kooperativer Aufbau eines Langzeitarchivs digitaler Informationen)
 * 2) * One softwaresystem DIAS (Digital Information Archiving System) developed at IBM and hosted at the GWDG
 * 3) * One hardwaresystem located at the GWDG
 * 4) * Individual modulated software: koLibRI (kopal Library for Retrival and Ingest, software package for the use of DIAS) developed at the DNB and the SUB
 * 5) Prototype of the Bundesarchiv
 * 6) Portico
 * 7) * commercial
 * 8) * permanent archive for reviewed scientific journals
 * 9) Lockss
 * 10) * open source software
 * 11) * cooperate archival system based on replications for all digital objects

Web archiving

 * Concepts
 * Example: the web archive of the Deutscher Bundestag

Preservation planing
Preservation planing as one main functionality of the OAIS Model
 * DELOS: Testbed for the evaluation of preservation planing strategies
 * PLANETS: Preservation planing environment incl. PLATO (PLANTES preservation Planning Tool)

Summary
Digital longterm preservation is a process, which can not be solved by an institute alone, because the development and implementation of strategies is very complex and costly. Therefore, a cooperation between the different organizations is highly desirable.