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Some DVD blanks have a lifespan of just a few years, say investigators

March 13th, 2008 · No Comments

According to the Digital Content Association of Japan, some recordable DVDs are so unstable they could lose data and become unplayable in just a matter of years. A new longevity test by the Japanese Association of 18 brands found massive differences between brands from Japan and Taiwan. Rather unhelpfully, the group has refused to identify the any of the makers involved, as it maintains that the investigation was more about product development than consumer testing.
However it does confirm that the estimated lifespan of four brands ranged from 105 years to 307 years, with others ranging from 10 to 45 years. Three disc brands (from Taiwan) were deemed so poor that they failed the test procedure even before the lifespan evaluation had begun The very best brand in the test (apparently from a Japanese maker) was estimated to function normally for 12,400 years…which should prove long enough for most users.
Atsumi Watanabe, a former technical adviser to Hitachi Maxell admits: “I was surprised to find that the quality of many DVDs can deteriorate rapidly. I would like consumers to understand that the quality of DVDs varies from one product to another.” He believes though that advanced error correction is protecting buyers from the reality that “the quality of stored data is deteriorating inside the disc little by little.”

Tags: DVD · Internet and networking · Miscellaneous items · Trade

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