Take a look at this..........
Gold Archive 74 minute CD-R with no logo in jewel case - 25 Pack
300 year shelf life
MAM-A Exclusive Matte Finish - Eliminates fingerprints an scratches on disc surface.
Recommended for Pro Audio & High-Use Archive Recording
MAM-A's exclusive GOLD recording layer
The MAM-A Phthalocyanine dye is the most resistant to light and heat.
These are used for archival purposes.
I am not picking on you here. They may be great discs for everyday use. Especially floating around in the car in high heat, sunlight and humidity. I am just going to venture to say that if this product is a breakthough for the preservation of data they would have had more than five recommendations since 2006. One would also think that they would have recommendations from major corporations.
The relevant link is:
Useful data, is that it is good to keep your discs out of high intensity light and not to drop then into near boiling water. There is no justification given for their extrapolation of the lifetime of the data contained within the disc. If you find it let me know and I will certainly retract this statement.
These are NOT CDs for everyday use. They are for mainly archieve purposes. I worked with several state agencies that require that our analysis reports be burned to these types of CDs in addition to a hardcopy being mailed to them. I will admit that exterrnal HDs & USBs are far more convient however the data/files can be easily altered.
It's really up to the OP on what type of media to use and how they wish to access the dat\files at a later time.
For photos, I would go for the gold CDs and keep them in a fire-proof safe or off-site. The only issue here is, will CD-ROMs still be around and for how long?
And yes, the stories that you hear of backup tapes having nothing on them is true but I never had that problem. <knocks on wood>
Hope this helps.
Thanks, I did look into this some more after your post. It is a worthwhile topic.
I did come across this paper, Optical Disc Life Expectancy: A Field Report; 2011; Barry M. Lunt, Douglas Hansen, and Matthew Linford: http://www.opticsinfobase.org/abstract.cfm?URI=ISOM/ODS-2011-OMD10
First some interesting facts
The average life expectancy of
Hard drives (not worth considering)
Magnetic tapes - 30 years
Flash drives - 10-12 years
Non-archival CDs - 25 years
Archival DVDs - 100 years
Archival CDs -300 years
The authors examined 8500 archival DVDs and 18000 archival CDs from libraries that were not circulating and kept under controlled temperature, humidity and light.
What the authors were interested in was the minimal life expectancy (before permanent data loss occurs). What they found was that the life expectancy of archival DVDs was 7 years corresponding to an average life expectancy of 100 +/-46 years. The life expectancy of CDs was 10 years corresponding to an average life expectancy of 300 +/-138 years (sd).
I was hoping they would conclude that printed media and vinyl LPs are the best way to preserve data, but alas there was no mention.