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Experimental Data on DVD Longevity

General discussion about recordable CD, DVD and BD media and write quality testing.

Postby frank1 on Sun Aug 14, 2005 8:47 am

longevity-freak ,

I like to know if you have a "Super Multi" burner such as the LG GSA 4163 B
in order to be able to experiment the longevity behavior of DVD-RAM Maxell 5x certified (MID code MXL 16)

This 5x Maxell DVD-RAM is made with a newly-developed Bismuth Coupling Material (BCM) recording layer
http://www.cdfreaks.com/news/9764
As I said bismuth salts are used in medecine against fever and so on .....
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Postby longevity-freak on Fri Aug 19, 2005 10:18 am

Some dvd disc quality scans on MAM-A 4X DVD-R Archive Gold:

http://forums.hardwarezone.com/showthre ... st15353424
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Postby longevity-freak on Fri Aug 19, 2005 10:20 am

frank1 wrote:longevity-freak ,

I like to know if you have a "Super Multi" burner such as the LG GSA 4163 B
in order to be able to experiment the longevity behavior of DVD-RAM Maxell 5x certified (MID code MXL 16)

This 5x Maxell DVD-RAM is made with a newly-developed Bismuth Coupling Material (BCM) recording layer
http://www.cdfreaks.com/news/9764
As I said bismuth salts are used in medecine against fever and so on .....


Well, I don't have a dvd writer capable of burning dvd-ram yet. Maybe in the future...
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Postby frank1 on Sun Sep 25, 2005 10:57 am

In order to renew this interesting discussion about aging of burned medias
stopped here since the end of July ...



I hope you know about these long lasting and official accelerated aging tests
conducted by the GIPWoG:
"Government Information Preservation Working Group"
for the NIST: National Institute of Standards and Technology:
http://www.itl.nist.gov/div895/gipwog/index.html

I extracted here file the information about the test conditions
from their report published on december the 9th 2004:
http://www.itl.nist.gov/div895/gipwg/StabilityStudy.pdf
to make this info clearly visible to all:


The only thing I find annoying with this official and long lasting tests in that they have not put out any pratical information for users about for example
which labels or MID codes
passed these tests better than others ...
If anybody finds anything practical like that it in all the information they put on-line please tell us !

http://www.itl.nist.gov/div895/gipwog/index.html
Their next meeting will be on October 5th, 2005 at the Library of Congress !!
That's more or less the only practical info I could find ...




-------------------------------------------------
Temperature and humidity:

A Blue M (model: FRM-256B)1 environmental chamber was used to control the temperature and relative humidity through various settings of temperature ( ? 18 °C to ? 93 °C) and relative humidity (5 % to 98 %). The specified control accuracy is ±0.5 °C for temperature and ±1 % for rela-tive humidity (RH) respectively. The test stresses of aging used are given in Table 1.
A complete incubation cycle for temperature and RH accelerated testing is shown in Fig. 1. Once at the stress condition, the temperature and RH were held constant for a period of approximately 45 h followed by a gradual return to ambient conditions. Discs were analyzed after each incubation cycle. This cycle was repeated under the same stress condition until the error rate of most discs in the group increased to exceed an upper limit of the error rates (as indicated in the DVD and CD specifications) or until the disc became unread-able.




Image



Image




--------------------------------------------------------
Light exposure:

A light chamber was designed and built at NIST to meet the requirements for controlled light exposure (Fig. 2). Two cylindrical light bulbs were placed vertically in the center of the chamber, with up to twelve discs placed at equal distance from the light source. Intensity was measured at each disc location to check uniformity. The discs were installed with the recordable side facing the light source.
Two 150 W metal halide (M-H) [7] bulbs were used for the light source, giving a 47.5 mW/cm2 light inten-sity at the disc surface. Light intensities were measured using a Scientech Victor S310 thermo-power meter with shield tube. The wavelength range of the metal halide lamps is similar to sunlight, centered at 500 nm, and partly extending to UV region.
Disc Analyzers: In order to monitor the change in the error rate during aging, discs were analyzed after each incubation cycle using disc analyzers. A CD-R analyz-er capable of reading BLER (in the case of CD) and a DVD-R analyzer capable of reading PI error was used.
DVD-R Analyzer: The DVD 1000P analyzer con-forms to DVD specifications and was capable of testing electrical, digital, and mechanical parameters in DVDs, including PI errors, PO errors and jitter.
CD-R Analyzer: The CD CATS SA3 Advanced allowed measurement of all relevant CD disc parame-ters including BLER, E32 errors and jitter. All measure-ments are performed according to optical disc industry standards.


Image


Image
Fig 2 - Chamber for controlled light exposure
Last edited by frank1 on Thu Sep 29, 2005 1:19 am, edited 1 time in total.
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Postby frank1 on Sun Sep 25, 2005 11:14 am

So the discussion does not start with concentrating on that a particular point,
I corrected in the info that I extracted something what I think is probably a typographic error:
on Page 2 of the PDF file you can read: " from -18°C to -93°C "
There is something surprising about these minus °C temperatures ...
[minus 93°C nearly never occurs on earth]

But then in the stress test conditions they give:
" Test stress: 60 °C to 90 °C, 70 % to 90 % RH "
Maybe they wanted to write: ~18 °C to ~93 °C ?? [~ : around]


So maybe somebody has to e-mail the GIPWoG
so they correct the typography in their report ...
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Postby dodecahedron on Sun Sep 25, 2005 1:22 pm

a snow-blizzard at night-time during winter in Antarctica, possibly ?
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Postby tony_g on Tue Sep 27, 2005 8:23 pm

dodecahedron wrote:a snow-blizzard at night-time during winter in Antarctica, possibly ?


Possible but not very likely. At the new (under construction) US Antarctica Research station, the builders have a "300 club" when the temp hits minus 100F (-73c) they sit in a +200F suna and then go run around outside...buck naked! :o
But I'd say -93c is VERY rare...plus "325 club" just doesn't have the same ring to it :lol:
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Postby longevity-freak on Wed Feb 08, 2006 11:27 am

Contents Page updated.

Contents Page (Part One)

http://forums.hardwarezone.com/showpost ... ostcount=1

Contents Page (Part Two)

http://forums.hardwarezone.com/showpost ... ostcount=2
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Postby longevity-freak on Mon Feb 20, 2006 1:21 pm

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Postby longevity-freak on Sun Feb 26, 2006 1:00 am

Disc quality scans of Made in Japan discs:

http://forums.hardwarezone.com/showthre ... e=60&pp=15
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Postby longevity-freak on Fri Mar 03, 2006 10:07 pm

References to news articles at Government Computer News.com and The Wall Street Journal Online:

http://forums.hardwarezone.com/showthre ... st17655415
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Postby longevity-freak on Sun Mar 05, 2006 12:37 am

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Postby dolphinius_rex on Sun Mar 05, 2006 4:32 am

I would just like to say thank your to Longevity-Freak for continuing to post these updates. I for one am reading them, and find them quite interesting!

Anyone else keeping an eye on these things??
Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R

The Progression of Computer Media
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Postby VideoRoy on Wed Mar 08, 2006 10:30 am

dolphinius_rex wrote:I would just like to say thank your to Longevity-Freak for continuing to post these updates. I for one am reading them, and find them quite interesting!


I agree, thank you.

dolphinius_rex wrote:Anyone else keeping an eye on these things??


I am now :o
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Postby longevity-freak on Sat Apr 01, 2006 9:50 am

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Postby longevity-freak on Sat Apr 01, 2006 10:06 am

dolphinius_rex wrote:I would just like to say thank your to Longevity-Freak for continuing to post these updates. I for one am reading them, and find them quite interesting!

Anyone else keeping an eye on these things??





Thank you, dolphinius_rex.
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Postby longevity-freak on Sat Apr 01, 2006 10:07 am

VideoRoy wrote:
dolphinius_rex wrote:I would just like to say thank your to Longevity-Freak for continuing to post these updates. I for one am reading them, and find them quite interesting!


I agree, thank you.

dolphinius_rex wrote:Anyone else keeping an eye on these things??


I am now :o




Thank you, VideoRoy.
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Postby Gabe on Sat Apr 01, 2006 4:02 pm

I take a look on your tests, too =D>
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Postby Scour on Mon Apr 03, 2006 12:26 pm

Hello!

Yes, I take from time to time a look on the tests, because I had also bad experiences with some media
Benq DW 1640, LG GH-20N, Pioneer BDR-208
Crucial M4, Sandisk SSD, Plextor M5S, Sandisk Ultra Plus, OCZ Petrol 256GB

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Postby longevity-freak on Sat Apr 15, 2006 12:56 am

Recommendations by University of Washington with regards to Environmental Requirements for Storage Media Stability:

http://forums.hardwarezone.com/showthre ... e=62&pp=15
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Postby longevity-freak on Thu May 04, 2006 1:04 am

Test results on the lifespan of various brands of dvd recordable media are here:

http://forums.hardwarezone.com/showthread.php?t=991675&goto=lastpost

More tests coming...
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Postby dolphinius_rex on Thu May 04, 2006 4:24 am

Wow... that's some serious pain with the Sony 8x DVD+Rs!!! :o
Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R

The Progression of Computer Media
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Postby longevity-freak on Thu May 04, 2006 4:51 am

dolphinius_rex wrote:Wow... that's some serious pain with the Sony 8x DVD+Rs!!! :o


Sigh...I was actually hoping for almost zero failure rate for all my discs stored in dry boxes.
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Postby Scour on Thu May 04, 2006 1:57 pm

dolphinius_rex wrote:Wow... that's some serious pain with the Sony 8x DVD+Rs!!! :o


Remember, this media was also not good in the c´t-review, but 08D1 was more worse

Edit: Taiwan or Austria-media?
Benq DW 1640, LG GH-20N, Pioneer BDR-208
Crucial M4, Sandisk SSD, Plextor M5S, Sandisk Ultra Plus, OCZ Petrol 256GB

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Postby longevity-freak on Fri May 05, 2006 4:16 am

Scour wrote:
dolphinius_rex wrote:Wow... that's some serious pain with the Sony 8x DVD+Rs!!! :o


Remember, this media was also not good in the c´t-review, but 08D1 was more worse

Edit: Taiwan or Austria-media?


Those Sony 8X DVD+R discs tested are made in Taiwan.
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