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| Authored by: Anonymous on Friday, December 07 2012 @ 04:15 AM EST |
That may well be.
I'm just reporting what IO've been told by various articles back when I checked
on CDs/DVDs for archiving, it was suggested that they are reliable for most 5-10
years.
[ Reply to This | Parent | # ]
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| Authored by: Anonymous on Friday, December 07 2012 @ 07:21 AM EST |
The long-term reliability of phase-change (home-burned) CDs and DVDs depends on
how they are stored. The biggest enemy is ultraviolet light which degrades the
polycarbonate. Avoidance of all light and cool consistent temperatures are also
preferred, as is not touching the surfaces and thus avoiding the deposit of skin
oils. The above also applies to quarter-wavelength pitted (factory-pressed)
disks. For longer life of phase-change disks, it is usually better to use slow
burn speeds, but the optimal speed depends on the brand and model of disk and
how it interacts with a given burner. [ Reply to This | Parent | # ]
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| Authored by: Boundless on Friday, December 07 2012 @ 03:31 PM EST |
> ... and I don't think I've run into more than one with any errors.
Are you using a bit error rate tester, or just listening?
The RedBook format is pretty robust, to your ear. It can [theoretically] fully
correct significant dropouts, interpolates beyond that (which would be fatal on
a data disc), and mutes when it can't interpolate. The muting normally has to
get really severe before you notice, but the disc became too messed up to copy
long before that.
I have Kodak-burned PhotoCDs (CDRs) that went unreadable in about 5 years.
Anyone who doesn't have a disciplined migration strategy for their CDRs (or the
source data), is at serious risk. There are at least two archival media brands
(MAM-A and JVC {formerly Taiyo Yuden}).[ Reply to This | Parent | # ]
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- Death of CDR data - Authored by: Anonymous on Friday, December 07 2012 @ 08:31 PM EST
- Death of CDR data - Authored by: Anonymous on Saturday, December 08 2012 @ 04:49 PM EST
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