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Meadia Old Age?
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tonypdean
Suspended due to non-functional email address
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23. November 2006 @ 04:39 |
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Hi,
I am having problems reading many of my backup DVD's although they were fine when they were burned. The surface appears to be perfect - there are no marks or scratches on them and they appear to be getting worse (this is only subjective).
I have tried them in different drives and some manage to read OK but others wont read in any of my drives.
I have used several different (cheap) brands but they all appear to suffer the same problems.
Anyone else have this problem - is it because I use cheap discs? If it is, then this is a very bad way to find out! The discs contain backups of data from my PC and its all lost now :o(
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Senior Member
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23. November 2006 @ 05:20 |
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You said it yourself. Cheap media! Why would you use cheap media, especially when you're doing backups of very important material? You shouldn't be frugal with money when it comes to media because of the importance of the content.
When storing data, I've noticed that it isn't entirely important to use TY or Verbs (MIT Fujis would suffice, for example), but for those few data discs, do I use cheap-o stuff? Of course not.
What brand are you using?
Latest AnyDVD to rip > VOBB to blank the unwanted on a DVD > Shrink to compress > ImgBurn to burn = Never starting a thread asking how to backup a movie
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tonypdean
Suspended due to non-functional email address
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23. November 2006 @ 05:45 |
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Thanks for the reply.
I always assumed that because I got succesful burns every time that cheap disks were fine - I never considered that they would deteriorate over time. I have used Datawrite, JR Universal and some without labels. I found a great link in this forum http://www.digitalfaq.com/media/dvdmedia.htm that grades them as "suitable for landfill only".
I guess I need to get some branded discs and recover what I can ASAP.
Thanks
Tony
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AfterDawn Addict
6 product reviews
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24. November 2006 @ 01:51 |
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Like Mr Pink said you are using cheap media. To see the genuine manufacturer of the discs you are using you can download this program called DVD Identifier.
It will tell you if you are using good media or not.
DVD Identifier
http://www.afterdawn.com/software/video_..._identifier.cfm
I hope that helps.
Edited by DVDBack23
"the mediocre teacher tells. the good teacher explains. the superior teacher demonstrates. the great teacher inspires."- William Aruthur Ward
Website: http://www.ampleblaze.com |
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ricster
Member
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24. November 2006 @ 02:21 |
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That's interesting. I've pondered many times about the longevity of DVDs. I hope JoeRyan will be along soon to explain whether your problem really is a degradation of the media...or something else. How long ago did you burn them ?
This message has been edited since posting. Last time this message was edited on 24. November 2006 @ 02:22
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Senior Member
3 product reviews
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24. November 2006 @ 02:46 |
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tonypdean
Stick with the good stuff and enjoy longer life spans on your back-ups. Made in Japan Media like Taiyo Yuden, or Sony & Fuji Made in Japan, Maxell Made in Japan, and last but certainly not least, Verbatim. I can attest that I have back-ups over 5 years old that still get excellent quality scores and playback is perfect with these brands. AS to the "real" lifespan: I don't think anyone can actually give an accurate answer on that. A lot depends on HOW you store them. and of course the quality of the media. The aforementioned use High Quality Advanced Metal AZO dye.
Stored in a dark, temperature & moisture controlled enviroment, I would "guess" they should last 10 years or more.
Use The Best Media for The Best Burns! TYs, Verbs,(Made in Taiwan) Sony MIJs (YUDEN000 T02), Sony Made in Taiwan DVD+R 16x, Maxell MIJ, RITEK G05.
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tonypdean
Suspended due to non-functional email address
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24. November 2006 @ 03:09 |
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Thanks for the comments guys. I have ordered a batch of Sony DVD's and I will transfer whatever I can retrieve.
I have learned my lesson - hopefully other newbies will read this before they make the same mistake.
DON'T BUY CHEAP MEDIA!
Have a good one ;o)
Tony
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AfterDawn Addict
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24. November 2006 @ 03:15 |
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Senior Member
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24. November 2006 @ 03:16 |
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@tonypdean
Welcome to the graduating class of the school of hard knocks. Many, if not all of us here at AD have gone down the same road with subpar media (CMC-MAGS) and wondered why six months later they don't play.
Heed the advice of numerous earlier posters, stick with the good stuff, Verbatim, Taiyo-Yuden, Ritek and a couple other types people swear by. Avoid the made in India, CHina at all costs, and avoid CMC Magnetics corporation disks, they are infamous for six month disk rot.
A very good thread to read about TY disks and the like.
http://forums.afterdawn.com/thread_view.cfm/296925
and this one,
http://forums.afterdawn.com/thread_view.cfm/262544
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AfterDawn Addict
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25. November 2006 @ 02:44 |
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Quote:
I hope JoeRyan will be along soon to explain whether your problem really is a degradation of the media...or something else.
Lmao. Oh wouldn't you just love one of his answers right about now...
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JoeRyan
Senior Member
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27. November 2006 @ 06:11 |
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A properly recorded disc should show PIE errors at a rate lower than 20% of the upper spec limit of 280. That is a rated of 56 or lower in order to be considered suitable for environmental testing. Stable dye formulations in environmental tests bringing the temperature up to 85 degrees C. and 85% RH resulted in an extrapolated median lifetime of 52 years. The best disc from this batch reached nearly 70 years, and 95% of them exceeded 39 years.
This assumes, of course, that these tests simulate the ravages of time accurately. They do not take into account the breakdown of the polycarbonate plastic. The weakness of DVDs is humidity because the seal between the two halves of the discs allows moisture to penetrate and reach the bonding adhesive. CD-Rs in the same kind of testing last at least twice as long.
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AfterDawn Addict
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27. November 2006 @ 06:14 |
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Wow, christmas come early! Thanks for that little gem Joe... **sigh**
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Senior Member
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27. November 2006 @ 15:52 |
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@JoeRyan
Who are you and what have you done to the JoeRyan we all know here at AD?
That last post made perfect sense and was well thought out and well explained without defending you know what.
Thanks for the info Joe.
BTW I still have the first audio CD I ever burned in 1999, has been in my car's trunk in both Maryland and North Carolina since its creation in June of 1999, been exposed to temps in excess of 130 degrees, been down to -10 degrees, and has a stick on label on top of that, still plays. Yes, it is a Memorex disk, manufacturer unknown though.
This message has been edited since posting. Last time this message was edited on 28. November 2006 @ 16:18
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JoeRyan
Senior Member
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28. November 2006 @ 03:09 |
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I'm the same person with the same order of logic and knowledge of test parameters and experience in testing and manufacturing storage media. My argument has always been:
1) A poor recording can be due to multiple factors.
2) Poor quality of the medium is one factor.
3) Poor quality of the medium can be defined by specific parameters such as mechanical defects, inconsistency, or electrical signal defects.
4) Poor compatibility of the medium and the drive is also a factor.
5) Compatibility is NOT a measurement of quality because it is drive dependent.
6) Unless one can both rule out compatibility as an issue AND specify which operating parameter is out of specification, one cannot accurately determine the quality of a medium based on the recording quality.
Without knowing the quality of a disc, one should not make claims about the quality. Opinions are fine. "I think Brand X is garbage" is a valid opinion. But because Brand X did not work for the person with that opinion, he or she cannot state for certainty that Brand X is poor quality or not unless a specific quality parameter is mentioned. "Brand X is garbage because so many of their discs have debris from the sputter mask" is a valid statement.
Note that I did not mention any brands at all. I do not defend the quality of any brand, only the process of drawing conclusions about the quality. It is a fine distinction that has drawn a great deal of anger from some who do not see the difference and believe my arguments are promotions of particular brands they despise.
This message has been edited since posting. Last time this message was edited on 28. November 2006 @ 03:14
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Moderator
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28. November 2006 @ 03:12 |
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Originally posted by JoeRyan:
Note that I did not mention any brands at all.
- that's why this was posted before Quote:
@JoeRyan
Who are you and what have you done to the JoeRyan we all know here at AD?
That las post made perfect sense and was well thought out and well explained without defending you know what.
:)
Main PC ~ Intel C2Q Q6600 (G0 Stepping)/Gigabyte GA-EP45-DS3/2GB Crucial Ballistix PC2-8500/Zalman CNPS9700/Antec 900/Corsair HX 620W
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