Hi guys and girls,
I saw Dolphinius' media longevity test thread.
Nice effort! Thanks.
I will check the results later on.
In the meantime, I have some questions if anyone can help:
1) Any tips on the best brand and / or type (model and / or dye) DVD-R and DVD+R for longevity would be greatly appreciated?
I googled for longevity tests but came up with a huge number of results.
I started to read them but haven't too much specific info.
Obviously Verbatim's DataLife (Plus or regular) are often mentioned.
I assume AZO dye is referred to in a lot of the articles.
I'll keep reading, but I don't want to go nuts; I just want a high quality DVD+R and DVD-R.
I have a Staples gift card, so I could start there, but I will need a reasonable number of discs 50 to 100.
To be safe I will throw out all my old blank CD and DVD discs (close to 1,000), as much as it pains me since some of it is Fuji TY 8X DVD+R shrink-wrapped media.
Luckily the majority of it is FAR or $10 after rebate 100-disc spindles of CD-R media.
I don't even want to sell any of them, since I feel it would be unfair to the buyer(s) who might not be aware of longevity issues.
The only thing I may sell is four 25 pack spindles of Office Depot Dual LayerDVD media since it is pretty fresh.
I will put a note that this may not be the best quality and link to videohelp.com media comments.
2) This a general (not media specific) question about the shelf life of BLANK media:
Is blank CD/DVD media sitting around going to have better overall (i.e. from date of manufacture till date of failure) than burned media?
The reason I ask is that I have media that has been sitting around for a couple of years and wanted to know if I should just chuck it all and buy brand new media from a high volume retail store where they will have pretty fresh stock.
I have 600 - 700 old shrink-wrapped CD-R's that are probably 5 - 6 years old that I will either throw away, or find some non-burning use for since I want them to last for a while AFTER burning them.
I do have CD-R's burned with video clips and other data from 2001 that, for the most part, still play (video).
A surprisingly relatively small percentage are choppy or unreadable.
I will check some old data CD's today to see how they fared.
3) I believe DVD media, in general, lasts longer than CD-R due to the construction / design?
4) Which is the best tool to check old discs for read issues?
5) I read the following on http://www.auphanonline.com/articles/vi ... le_id=3465
(came up during a google search; haven't verified the trustworthiness of the author and / or site)
These are three major dyes used in recordable media and their expected shelf life.
* Cyanine dye - the cheapest and thus most widely used dye. Looks bluish, blue-green or green depending on the foil backing. Estimatated shelf life: 1 - 5 years
* Phthalocyanine dye - very light aqua color almost transparent. Usually backed by a gold foil giving it a gold color. Estimated shelf life: 100 years.
* Azo dye - dark blue in color. Estimated shelf life: 100 years.
If you really want to store your data for a long time, look for recordable media that uses either the phthalocyanine dye or azo dye with gold foil backing. They are expensive but can hold your data up to 300 years. However by that time, CD-Rs and DVD-Rs would have gone the way of the 8 track tape.
Here is a CD-R that uses phthalocyanine dye with a 24k gold reflective layer.
Stores data for over 300 years.
They then have a picture of eFilm Archival Gold discs.
PS: If anyone is interested, when I have them, I can post my results by brand and age (I usually wrote the date I burned the disc and, in certain cases the burner and burn speed).