Defect

Opslagmedia

Voor elk digitaal object, zij het databank of kunstwerk, vormt het defect raken van de drager (door slecht gebruik of slijtage) een bijzondere zorg. Wanneer digitale dragers het laten afweten, doen ze dat vaak – in tegenstelling tot videotape en film – zonder zichtbare tekenen van verandering, en is de schade onvermijdelijk totaal. Een film kan beschadigd zijn en nog steeds vertoond worden, een videotape kan een deel van zijn signaal verliezen terwijl een (groot) deel toch nog gered kan worden: bij digitale media is het vaak een zaak van alles of niets. Een groot deel van dit risico kan echter vermeden worden door voorzichtige omgang en opslag.

Hou rekening met deze basisvereisten:
- Het eerste wat je doet om het risico op het defect raken van media te vermijden, is correct omgaan met het materiaal, en dit onder correcte opslagomstandigheden. (Zie de best practices secties van deze website voor een gedetailleerde toelichting over de correcte omgang met dragers, ideale opslagtemperatuur, etc.)
- Omdat digitale informatie gekopieerd kan worden zonder generatieverlies, is spreiding (het maken van verschillende kopieën, idealiter bewaard op verschillende locaties) uiterst belangrijk om een lange levensduur van een digitaal werk te verzekeren. Indien één kopie het laat afweten, omwille van welke reden dan ook, kan de back-up gebruikt worden voor preserveringsdoeleinden.
- Magnetische dragers zoals floppydisks kunnen beschadigd worden door vuil, water, of blootstelling aan magnetische velden.
- Cd-roms en dvd’s kunnen kapotgaan door krassen, of kunnen delamineren ten gevolge van hitte.

Hardware en weergaveapparatuur

Gezien de weergaveapparatuur het meest zichtbare deel is van een computergebaseerd kunstwerk – vaak het enige zichtbare deel – kan een defect aan de apparatuur catastrofale gevolgen hebben. Voorzichtige planning kan helpen om deze catastrofe te vermijden. Een goed middel is het gebruik van een vragenlijst voor de kunstenaar, om zo een inzicht te krijgen in het soort aanvaardbare handelingen die je in het geval van defect apparatuur kan ondernemen.

Belangrijke vragen zijn hierbij onder andere:
- Maakt de weergaveapparatuur integraal deel uit van het werk, of is het slechts een middel waardoor het werk zichtbaar gemaakt wordt?
- Waar kan je, indien de originele weergaveapparatuur defect raakt, terecht voor gelijkaardige apparatuur om de originele te vervangen?
- Welke kwaliteiten van de weergaveapparatuur zijn van groot belang voor het werk: aspect ratio, grootte, resolutie,…?
- Hoe worden deze kwaliteiten gedocumenteerd: geschreven documentatie, screen shots, installatiefoto’s?
- Hoeveel variatie op deze eigenschappen is aanvaardbaar wanneer het materiaal het laat afweten?

De inhoud van deze pagina mag worden afgedrukt of gedownload voor persoonlijk gebruik, maar mag niet worden gekopieerd of gepubliceerd voor andere doeleinden. © 2006 Independent Media Arts Preservation, Inc.

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