CD-R or industrial made CD - which one lasts longer ?

[Shaman]

I allways thought, the lifetime of high quality CD-Rs is similar to industrial made CD´s.

Does someone know more about this ?

Thanks

[cfuehrer]

I would imagen duplicated pro CDs would be better. I have had a few issues with CD-Rs "flaking" apart.

[edmann]

Originally posted by cfuehrer
I would imagen duplicated pro CDs would be better. I have had a few issues with CD-Rs "flaking" apart.

Duplication means recording onto a recordable CD (CD-R). A laser "burns" pits on the CD. Replication is stamping out the CD and the pits are molded into the CD.

[Shaman]

There must be some scientific long term studies on this subject.

Companies like HHB f.e. are claiming their CD-Rs to last for at least 100 years. This should be justified somehow ?

More experiences, knowledge....please ?

[bgavin]

I've seen a lot of chatter on the DVD boards about DVD-R or DVD+R starting to rot after 12 to 18 months.

Laser rot was a problem I have with my 300+ collection of LD (12") movies. Several of my out-of-print copies are completely unusable. Evidently there is a chemical self-destruct problem with LD disks.

If this is present in DVD or CD-r, this makes them useless for long term reliable storage.

[Shaman]

Originally posted by bgavin
I've seen a lot of chatter on the DVD boards about DVD-R or DVD+R starting to rot after 12 to 18 months...

Thanks bgavin, exactly this is my problem - there seems to be lots of chatter and very little knowledge.

Many people claim that CD-R´s don´t last while they keep them in their cars with 40 degrees+, lay CD´s on whatever surface, scratch the data side etc...I mean it´s not a miracle, that CD-R´s do not last !

Then we should discuss, where are the differences with different CD-R mediums. Most people, that I know who are complaining actually use the cheapest no name brands available.

There are companies like Tayo Yuden and HHB, who seem to be better than others. Who knows more ?

My question is: While CD-R´s and industrial made CD´s both use lacquer to protect their data surface, where are the differences ?Is the one harder than the other, more protective against scratches, UV radiance...etc.

Then - do thermotransferprinted CD-R surfaces protect better against UV radiance...?

Im just asking because I´m using CD-R´s for over 10 years now and never had problems with my first generation CD-R´s. These are golden Sony CD-R´s (15 Euros ..then ) burnt in realtime with a standalone Marantz CDR 610 Mk II writer.

[Bob Olhsson]

Cd-Rs aren't even in the ballpark with replicated CDs. You're talking about comparing photosensitive dyes to mechanical pits that have been molded into plastic.

Suits always want statistics to cover their asses in case something goes wrong but real world experience proves that accelerated aging tests are utterly meaningless. I've got tape that was supposed to be dust 30 years ago that plays fine and "more reliable" tape from 15 years ago that won't play without baking.

We'll only know the real truth years from now.

[NeoVXR]

the problem is the testing and the statistics.
your most valuable work may be rotten with the one CDR that has a flaw and lasts only 3 years.
but I had bought music CDs that played in one device but not in another, just because of bad material and different lasers (no copy protection).
the best raw media does not help with a poor burner device with an old laser.