Digital information can be stored in different ways on different media, such as:
- USB sticks (solid state)
- Portable hard drives (magnetic)
- CD-ROMs & DVD-ROMs (optical)
- Floppy & ZIP discs (magnetic)
For archives, solid state storage (USB sticks and other FLASH-memory based systems) is a relevatively new phenomenon. Even portable hard drives are not yet a common sight. This section will therefor focus on traditional magnetic and optical removable media.
The following standards are relevant for storage media:
- ISO 18925
- NEN-EN-IEC 60908: Audio recording - Compact disc digital audio Systeem
- ISO 10149: Information technology. Data interchange on read-only 120 mm optical data disks (CD-ROM)
- ISO 18925: Imaging materials - Optical disc media - Storage practices
The following links provide more information about optical and magnetic carriers:
- AES standard for audio preservation and restoration - "Life expectancy of information stored in recordable compact disc systems - Method for estimating, based on effects of temperature and relative humidity"see www.aes.org/standards.
- General information about CD-ROMs:www.kodak.com.
- Recommendations for long term preservation of CD-R and DVD-R: (Dutch only) persons.kb.nl/rgillesse/cdrot/langetermijncdr.html.
- CDs for the Archives (Dutch only) www.expertisecentrumdavid.be/davidproject/teksten/DAVIDbijdragen/Archiefcd.pdf
- Durable CD’s (Dutch only) Filip Boudrez, www.expertisecentrumdavid.be/davidproject/teksten/Richtlijn2.pdf
- Magnetic storage media for the Archives (Dutch only)