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#1 |
Junior Member
Join Date: Dec 2004
Posts: 6
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![]() ![]() I have some which now approach 4 years and I am concerned. Where can one read up on this subject? Are the more expensive CD's better then the "cheapies" :sad: |
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#2 | |
Senior Member
Join Date: Jul 2004
Posts: 162
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retinaman wrote:
Quote:
Good CDs will last for, in theory, 30 years. Some of the best write media is made by Taiyo Yuden. http://www.t-yuden.com/recordablemedia/index.cfm http://www.yenra.com/how-long-cds-and-dvds-last/ |
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#3 |
Senior Member
Join Date: Nov 2004
Posts: 935
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If it was me, I'd back up files on different media. You could try cdrom, and maybe dvd. And as a further backup, can grab two big hard drives and use them for storage. Store the same things on both drives. If one drive fails due to aging etc, then at least the chance of the other one still working is good..so then grab another drive and then transer all the info across. A big external USB type drive wouldn't hurt either. I think that spending time and effort to back things up saves a lot of heartache and pain.
For cdroms, I heard that even if the material is stable...the thing is like ..made of plastic or whatever. And a plastic is a fluid..so it's susceptible to creep, which is a slow movement of the liquid...where the shape of the cdrom distorts...given time..maybe a long time. |
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#4 | |
Senior Member
Join Date: Jul 2004
Posts: 162
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Kenny_Leong wrote:
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#5 |
Junior Member
Join Date: Dec 2004
Posts: 2
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You may be interested in this document:
http://www.itl.nist.gov/div895/carefordisc/index.html It is oriented toward librarians but has a lot of useful information for the rest of us too. Note that long estimates of CD lifetimes generally assume the kind of optimal conditions that most of us cannot achieve. Refreshing your media periodically as you suggest is a good idea, as are the other suggestions about keeping multiple copies on different kinds of media. |
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#6 |
Senior Member
Join Date: Sep 2003
Posts: 484
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It's very simple- If you live Ten years after you burn the CD.
1) Longevity is Ten Years 2) Longevity is a lifetime I burn high quality CD's, Then a DVD of several CD's and back up on an external harddrive. I archive at another location in case of fire/flood/theft. |
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#7 |
Junior Member
Join Date: Oct 2004
Posts: 8
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I've been reading a lot of stuff on this and I think that making prints are your best bet. Burning to cd's or dvd's that will probably not be readable or at least instantly recognizable in the far future will just, in my opinion, relegate them to the dust bin. Just who is all this valuable stuff being archived for anyway? Your descendants ten generations down? ha!
Just my two cents. The stuff you do is most likely valuable to you-only in rare cases to the tenth generation. I say use paper copy. SLK |
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#8 |
Senior Member
Join Date: Nov 2004
Posts: 935
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Prints will degrade eventually. Digital doesn't degrade if you just look after the information. As long as you know how to decode the jpg or whatever file, then you'll always be able to 'see' it.
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