If one wants the data not to go away, what is best choice price no concern for discs and format for very long term storage, i.e. R/RW/DL +/-, whatever, based on evidence and results?
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Verbatim or Taiyo Yuden DVD-R like http://www.rima.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=R&Product_Code=1762-1...ode=TAIYOYUDEN
See also www.nomorecoasters.com -
When it comes to DVD's, I will only use verbatim they are the best IMO very high quality discs and fairly scratch resistant.
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Define "long term" and describe the storage environment in terms of temperature and humidity, and most especially changes in those, also exposure to light.
There is no available "evidence" or "information", only guesses based on experiments. Other media have been used and tested for this type of storage, and may be a better solution.
Are we talking data or video, how important is it (translation - what budget is available to make this happen?).
Using burned disks for periods longer than 3 to 5 years would not be something I would recommend for data storage. -
Originally Posted by Crazyj32
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DL DVDs are too new for there to be any hard evidence. It wasn't all that long ago that the manufacturers were saying that it was "impossible" to ever produce such discs for consumers. To get them to work they had to do some funky stuff with dyes and honestly, nobody knows how long these discs will last. There is an unspoken fear that they may not last very long at all. If you have anything that you must preserve, at this time I personally cannot recommend using DL discs because they may not last more than a few years. We just don't have the data and they haven't been around long enough for anyone to have any hard evidence one way or another. If you feel like risking it, stick with Verbatim ONLY because their standards are so much higher than everyone else's for DL media.
If you are rich, you might consider the MAM-A brand of gold DVD discs, but a fairly recent discussion of them wasn't exactly glowing. In theory under the proper conditions the use of gold should be ideal for archiving, but the discussion had some suggestions that MAM-A's standards weren't as high now as they used to be, so caveat emptor. Verbatim does make some pricey single layer DVDs that are highly scratch resistant and these might be ideal for long term archiving if you don't feel like trying the MAM-A gold DVD discs. -
I worry about the long-term readability of secondary layers myself. I don't think archival material should be written to DL media. If have DVDs that I've authored DL, but the data files that created those DVD-Video discs are archived on SL media.
Verbatim has some high grade media, with an upper gold layer, a silver reflective, and anti-scratch coatings. They cost a lot, but I'd buy one for a wedding or something along those lines, if it was important. Generally, any MCC or TY media would be good. Test it, of course, don't assume, ever, for any disc that is important.Want my help? Ask here! (not via PM!)
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I worry about DL media as well but I am also fearful of all writeable DVDs. The jury is still out, the industry still hasn't agreed on how to measure long-term readability.
I'd record multiple copies on both TY and MCC media, and also on an external USB hard disk if I was truly concerned about the data going away. I might place all of these in a plastic bag in my refrigerator if my paranoia worsened. In fact I might consider multiple refrigerators in multiple locations.
I also might consider an online backup website. -
The jury is only out to people in online forums who know next to nothing about optical media. Professional organizations, companies, and pros in the media field are pretty well rested with the "several decades" timeline. It ranges from 20-100 years, although readability might be suspect after 30-40 years. Cheaper made discs made have concerns in 10 years. Sometimes less, but that's a minority, not a majority.
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Originally Posted by lordsmurfWhen in Las Vegas, don't miss the Pinball Hall of Fame Museum http://www.pinballmuseum.org/ -- with over 150 tables from 6+ decades of this quintessentially American art form.
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Lordsmurf
You know good and well that the trade organizations are still studying DVD longevity and have not taken a firm position or even provided firm estimates. The Commercial Optical Storage Applications Group. (COSA), a sub committee of the Optical Storage Technology Assn. (OSTA), shows findings which are hardly conclusive.
You also know that what was generally accepted as CD longevity has been shown in practice to be unduly optimistic.
On top of all of this coatings are still evolving to provide for improved speed and last years media may have very different properties than this year's or next year's.
Seeker47
You points are well made, but money makes the data on punched cards or 8-track or 8" floppies or 5.25" floppies available. There are people out there who will convert from these antique media to modern media. I have little doubt that if DVD's containing data are readable, someone will read them for a price. -
They've all made preliminary conclusions and really don't expect anything to drastically change. There is a margin of error, but it's not this "in 6 months" bullshit you see online from joe-blow forum users.
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refrigerator
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Originally Posted by FirelogWant my help? Ask here! (not via PM!)
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Originally Posted by zoobieWant my help? Ask here! (not via PM!)
FAQs: Best Blank Discs • Best TBCs • Best VCRs for capture • Restore VHS
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