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Life expettancy of copies?
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Rick6
Member
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14. January 2006 @ 09:48 |
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I have been using DVD Shrink for some time now and have backed up all of my DVDs ,some 600 or so of them.
Today I was listening to a radio talk show called Bob and Bob something, where these two guys take calls about computer related questions. Anyhow some guy calls in and states that the life of a DVDs was only between 2-5 years. More for a original pressed DVD and less for one you burn on your home computer.
So I am already to here the host of the show , the expert, say some -thing like , no your wrong they will last much longer then 2-5 years, only he doesn't say that he some what agrees with him.
So this got me concerned. These guys, the host of the show are supose to be some kind of computer experts ,in the know etc.
I heard 100 years mentioned and was thinking I'll be lucky to still be alive in 20 years so 20 will do me fine.
Question : Who has some good info on this?,and I don't really mean just something you've heard I mean someone who really knows. Have I spent all this time and money ,only to fine that in a few short years these back up copies are going to be so degraded I won't even be able to view them,or what. Thanks.
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gear79
Suspended permanently
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14. January 2006 @ 10:46 |
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i've read articles on these, and there are a few methods to aid you in the life in your dvd's.
articles say, store them in a dark, cool place, standing up if possible, avoid touching them, scratching them, oils, solvents, paper labels stuck on the tops, good media helps a bunch too.
anyway, media's life is expected to be at least a decade...
here are a few links to look at to read..
http://www.uwsg.iu.edu/usail/backups/storing/
http://palimpsest.stanford.edu/bytopic/electronic-records/electro...
http://www.unesco.org/webworld/mdm/administ/en/guide/guide009.htm
this one is a good one..
http://asia.cnet.com/reviews/hardware/storage/0,39034915,39091141...
hth...
1rst. sig compiled by phantom69 |
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jerry57
Newbie
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14. January 2006 @ 20:50 |
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i have read an article online at pcworld where a physicist stated that cheaper dvd media will become unreadable after two years and the better quality media will last for five years..something to do with the dye degrading...i hope this is not the case as i have archived at least a hundred vhs tapes onto dvd...
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Moglex
Suspended due to non-functional email address
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15. January 2006 @ 06:03 |
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It's quite hard to see why the dye would spontaneously degrade.
Chemicals usually degrade either because they react with other chemicals or are affected by light or heat.
If the DVD is not properly sealed at the edge, then there is a good chance that the DVD will degrade over a period of a few years - depending on the environment.
If the seal is intact (not sure if you can tell), then provided the DVD is stored in a coolish, dry, dark place, there is no reason to suppose it will not last for a few decades.
People tend to remember scares, and assume they will apply where they won't. There was a big scare about CD's only lasting five years after a batch of the very first ones manufactured were found to have degraded, but those fears have come to nothing.
There have certainly been cases where badly manufactured disk have degraded very quickly, but most people seem to be OK most of the time.
It would not be a good idea to trust irreplaceable data to a DVD, though. You would need to store it on more than one, and check them regularly.
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Rick6
Member
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15. January 2006 @ 06:22 |
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Well I no longer use the Ridata disc and have switched to the Tayio Yuden . I did this partly because I felt the better quality media would last longer. I hope so anyway. Does anyone know of something even better , that I should be using instead? I also switched my target to 4300 so I don't burn so close to the edge. Perhaps this will help preserve the outer seal and keep the air away from the die?
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dana0069
Junior Member
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15. January 2006 @ 06:56 |
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this is another example on how the manufacture's like to play on words.
A dvd disc will last 10, 20, 50years...thats providing it is a blank disk and stored probably.
The minute you write to the disc, or expose it to the light from your burners laser, the degrading process begins immediately.
from that point on, how long it will last is anybody's guess. depending on the process that was used to make the disc to begin with, but with good quality media and dyes you should get a min. of 5 years from your disc.
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dr_no
Member
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15. January 2006 @ 07:39 |
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Rick6, good move there, reburning those Ridata disks. I'm doing that myself, I scanned some of them, found very bad disks, few were burned only in november, had an old batch left over from about 2 years ago,with 0 disk quality tests. So, I guess it depends on what media you are burning to from the beginning. Have some old TDK burned about 3years ago, I know TDK is not well regarded here and they still scan at 95-97%.
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