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NIST Releases Study Of CD/DVD Longevity

dirkin writes "The National Institute of Standards and Technology has released a preliminary study of the potential lifespan of CD-Rs and DVD-Rs. The PDF study is here. A good starting point for deciding what type of media to purchase to keep those backups and photos kicking around longer. (You DID buy the silver/gold alloy phthalocyanine CDs, didn't you?)"

16 of 425 comments (clear)

  1. Oh no! by zebs · · Score: 3, Funny

    My pr0n my precious precious prOn!

  2. floppy disks by fredopalus · · Score: 3, Funny

    Lots and lots and lots and lots and lots and lots of floppies.

    --
    Jonahweb.com has stuff.
    1. Re:floppy disks by Squareball · · Score: 4, Funny

      Correct! So the obvious solution is MILES AND MILES of paper tape!

  3. This is not surprising. by Krapangor · · Score: 5, Funny
    The data layer of a CD-R consists of cynanide or phthalocyanine organic dyes. However these dyes have a orientated electric charge like water molecules.
    Take now into account earth's rotation and its magnetic field. It induces an albeit very slow movement of the molecules - the data layer degradation. The same effect causes btw certain currents in the Pacific oceans. While the movement is very slow and in the case of the ocean not very important, it does cause damage after a certain amount of time in the case of a CD-R. You should remember that the scale of the information storage units on a CD-R is in the nanometer range. The information is just "washed away" in an entropy-like effect.

    However, you can slow this movement down. The molecular movement in the data layer is directed. So it can be reversed to a certain degree just be placing the CD-R the other way around. So, all you have to do is to mark the position of the CD-R in your rack exactly. And reverse it's position every month or so. This can increase to the lifetime of a CD-R about 150 percent. More can't achieved (in normal environment) because electric machines like your computer etc. create their own electro-magnetic fields. And the effects of these varing fields are much more difficult to negate.

    BTW: the 100 percent wrong place to store your CD-Rs is on the top of your CRT.

    --
    Owner of a Mensa membership card.
  4. Re:Blah, physical backups by Jugalator · · Score: 4, Funny

    Or put it in your Kazaa folder and give the filesi maginative names like "horny young teen sex party.mpg", etc... You need to maintain a porn name real name table though in case you'll need the backups again. :-)

    --
    Beware: In C++, your friends can see your privates!
  5. Re:harddisk rack back-up by B747SP · · Score: 4, Funny
    most people I know have trouble just filling up their 'small' 20 or 30 gig drives.

    With respect Sir, most people you know don't download nearly enough pr0n.

    --
    I find your ideas intriguing and I wish to subscribe to your newsletter.
  6. HD by bogaboga · · Score: 4, Funny

    Mine will be kept on a real Hard Disk. What I have now is a 120GB, 7,200 rpm Maxtor HD, which has never disappointed me at all.

  7. remember kids, by Anonymous Coward · · Score: 5, Funny

    Discerning pr0n collectors choose silver/gold alloy phthalocyanine CDs.

  8. I Use Stone Tablets by Nova+Express · · Score: 4, Funny
    I carve all my important data on stone tablets. If it was good enough for Yaweh, they by Him, its good enough for me! I look forward to over 2000 years of stable storage without data loss! Unless, of course, I need to smite some wayward Israelites with them or something...

    --
    Lawrence Person (lawrencepersonh@gmailh.com (remove all "h"s to mail)

    http://www.lawrenceperson.com/

    1. Re:I Use Stone Tablets by PocketPick · · Score: 3, Funny

      Yeah, I was cool with stone tablets too till I heard about that whole Ten Commandments/DRM fiasco. Something about copyrights, devestating floods and 'pillars of salt' kinda irked me.

  9. phthalocyanine shmithalocyanine by mg2 · · Score: 5, Funny

    I still think that corn CDs are the best idea... you'll just need to reburn every once in a while.

    It only becomes a problem if you're a big nacho fan...

  10. Re:government? by Stevyn · · Score: 4, Funny

    I just write mine down as ones and zeros on paper. It takes me a few months to do a full system backup, but it would take the government years to accomplish the same task. I figure I'll be saved by the statute of limitations by the time they figure out what I've been doing.

  11. Re:Readers by Anonymous Coward · · Score: 5, Funny

    "I still have tons of 5" floppy disks"

    That could be a problem, since the only drives around are for 5.25" disks.

    -Anonymous Phil

  12. Data Corruption by Macrobat · · Score: 3, Funny

    Only problem is, the message gets corrupted really, really fast. Witness the Religious Right in America. Or medieval Europe. Or the tail end of the Roman Empire.

    --
    "Hardly used" will not fetch you a better price for your brain.
  13. Re:government? by Proc6 · · Score: 4, Funny

    I store all my data in FBI digital case files. The government will obviously never have a system in place that can read them, so I'm safe.

    --

    I'm Rick James with mod points biatch!

  14. Re:Holographic storage by Anonymous Coward · · Score: 3, Funny

    That's what makes it such a great archival medium. Centuries from now, holographic storage will still be "almost here", so you never have to worry about it becoming obsolete.