I had a quite interesting conversation with a friend of mine over AIM. The question at hand is do CDDA bought cd's from the store last longer(as in wear and tear) or do burned CD-R/RW's?
What I found was that the bought cd's would get the *hit beat out of them and still play but with the cd-r's after a while(wear and tear of course) would be out of shape and skip or not play at all.
Who outlives who?
l8
like honestly, who does that?!?!
I found cd-rs do have shorter life-spans but still worth burning. Heck, all cds in my car and house stereo are cd-rs which some are downloaded stuff and others copies of CDs I bought.
This way my original CDs don't go through wear-and-tear as much. As for downloaded mp3's they are all backed up on other CD-Rs and I burn new cd for use when the cds in use go bad.
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Yeah, bought CDs will last longer if both are handled the same.
Thats why I back up all my music to CDr. All the originals are sitting in a binder underneath my bed, they never see daylight and will most likely outlast cd technology.
Some of my cheaper cdr's are allready coming apart. The silver backing peels off and the laser can't reflect the data back to the device. Bought cds really don't do that unless you get them wet, then abrasivley rub the cd
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there was a study done not too long ago - i forgot who did it. anyway, they tested the lifespan of various CD-Rs and CD-RWs. they just burned a bunch of CDs and put them in a safe place, out of light. after about 2 years of just sitting there, never used other than the original burn, many were found to be deteriorating already. some could not even be read.
WoW...if that would be true any reason for that? I mean the cd is still in tact as is the data. I usually use TDK cd-r's maybe I am in need of a sudden change in brand? lol
l8
like honestly, who does that?!?!
I wonder if they anyone did a similar study dvd-rs?
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Nearest I can tell, moisture and various temp changes crack the foil on cdrs and the glue comes off.
TDK, never used them, but I cant say I've heard too many bad things about them. I've honestly never had a problem with anything, other than those 100 packs that come plastic wrapped with no label (shiny on both sides)
I don't know too much about cds, somebody will probably prove me wrong in saying this...but I think the data is written to the plastic, which stays there. But in order to read the data, something has to reflect it back to the laser. SO the laser goes through the plastic, the image is then reflected off the backing behind the plastic (underside of label) back to the laser. If there is no reflective backing, the laser just passes through and can't read the data (even though its still there).
It might also have something to do with how the data is put on the cd. Store bought cds have the data stamped into the plastic. Cds alter the plastic with different wavelenghts and intensities of light.
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I don't know if it's right, but I've always seen comments that CD-Rs are made with higher quality control standards than pressed CDs. Anecdotal evidence doesn't mean much though.
Before drawing any conclusions, you should keep in mind that CD-Rs might not last as long because you use them more often or treat them more roughly than a CD you paid top dollar for.
:sw
"CompuGeek your geekiness is unsurpassed except by your virginity." - Trilobyte
i don't use cd's to back up my shiat anymore.
back when i did use cd-r's though, i never kept them around long enough for it to matter... if i needed a backup, i made it fresh, bc i could never keep track of what was already burned.
besides, i have the security of knowing, that cd-r or not, i can send in my drive to a data saver place, and for a mere $400, i can get that drive's data.
of course, the $400 assumes no problems, and minimal labor.
nsap @ filesharingtalk.com
I took a little Google trip on the subject, when fungus suddenly caught my attention:
- Measures of CD-R Longevity
- CD deterioration due to oxidisation and fungal attack
- Fungus eats CD
- CDs sound better with fungus
not really a problem when they are either on your hard drive or on p2p, ready to burn a replacement at any timeOriginally Posted by origin
is it?
hmm, When it comes to CD-R's, I have had no problems yet. (Only problems were caused by me, Spilling stuff on CDs, dropping them, etc..)
I have a few CDs I made back in 1999, they have a few scratches on them, but the sound quality is still great.
As long as you dont scratch a CD-R, you should have no problems.
TDK is one of the better ones for longevity, they estimate their cd-r s are good for 70 years, click here for article.
Google search for cd-r longevity and you will find lots of interesting stuff. CD Media World is a good site for this type of thing though some of the articles are out of date.
Btw organisations who have effective archiving mechanisms generally work on a 5 year rota for replacing cd-r based data.
"You have already proven what you are...
a troll chucking flaming spam out..".....who me?
it's not always that easy... some stuff on p2p is very hard to find if you can't find a hash or sources. and if your hd goes belly up and you can't access the one you already dl'ed... you could be waiting for that prog for awhile.
nsap @ filesharingtalk.com
that's the beauty of p2p
you upload everything to your peers--if you run into trouble, you download it back from them
i had crashes without backups, it wasn't a big deal, since all i had to do was grab it back from my dc hub mates--i had it all back in just a few weeks
p2p=RAID on a global scale
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