Durabilitiy of the GlassMasterDisc

 

The lifetime of optical discs for data storage is usually estimated by accerlerated aging methods using the Arrhenius or Eyring method, which take into account the influene of temperature and humidity. The following standards and studies are available on this subject:

  • ISO Standard 18921:2008 "Imaging materials -- Compact discs (CD-ROM) -- Method for estimating the life expectancy based on the effects of temperature and relative humidity"
  • ISO-Standard 18927:2008 "Imaging materials -- Recordable compact disc systems -- Method for estimating the life expectancy based on the effects of temperature and relative humidity"
  • Standard ECMA-379 (equivalent to ISO/IEC 10995:2008) "Test Method for the Estimation of the Archival Lifetime of Optical Media"
  • Tests conducted by the National Institute of Standards and Technology in the USA as part of the "Optical Media Longevity Study"
  • Tests conducted by CDs21 Solutions and the Archive Disc Test Center in Japan

The world-renowned French instition, the LABORATOIRE NATIONALE DE MÉTEROLOGIE ER D'DESSAIS, has also tested glass discs fot their durability in addition to converntional optical discd.

In summary, it can be seen that, as expected, all conventional discs were already aged and partly unredabled after a short time. Only the SYYLEX glass adisc was cmpletely unchanged after these tests. That is, in the case of the glass disc one can exprect a practically unlimited life.
 

1000 hour test at 194°F and 85% relative humidity

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