Is there a shelf life for cloned DVD's?

Discussion in 'CD/DVD/BD Blanks' started by steviegt, Oct 21, 2007.

  1. steviegt

    steviegt Member

    Is there a shelf life for cloned DVD's? Using the Verbatim DL from Singapore, copying movies, is there a limited shelf life? I thought these backup copies would last as long as a retail version?
     
  2. oldjoe

    oldjoe Well-Known Member

    No one can put a definite time on the life of a DVD. In theory, they will last forever.
     
  3. Webslinger

    Webslinger Retired Moderator

    There is for all blank media, despite manufacturer's claims. And some blank media will degrade faster than others. For DL blank media, there's really no other blank media that you should be using anyway. Keep your media away from heat, humidity, and UV.
     
  4. DetroitBaseball

    DetroitBaseball Well-Known Member

    They should be playable for a few years.
     
  5. Crower

    Crower Well-Known Member

    DVDs whether single-layer or dual-layer, use a dye to record the data (M disks being the exception). Dyes are naturally unstable, and most any dye will fade over time.

    Archivists categorize dye fading in two ways - dark fading, and light fading. Dark fading occurs when a disk is in complete darkness and is primarily due to molecular decomposition from ambient heat. It can be slowed by keeping the disk cool (I refrigerate my important, long-term data disks). Obviously, putting your disks in a hot area (attic, cars, etc.) will greatly accelerate this type of fading.

    Light fade is attributable to fading caused by exposure to light. Exposure to the upper end of the spectrum (blue, violet, and UV) can cause significant fading over time. Keeping your disks in an opaque case will prevent light fading almost completely. Never lay them out in the sun where they would get a dose of harmful rays. Playing your disks will contribute insignificantly.

    All that said, your disks should last a long time if well managed. It's quite possible that we will move on to the next generation of storage (whatever that is) by the time your disks expire (if properly kept), and you won't be able to find a player to play them on (unless you've stored one or have one available).

    So, as the previous posts have said, your disks may last a long time, and keeping them in a friendly environment is important, but the actual lifetime is impossible to predict.

    By the way, other failure modes include surface damage, de-lamination, and reflective layer deterioration, but these are less common and less likely to occur compared to dye fading (well, maybe not surface damage). M disks are touting centuries of lifespan (take that with a grain of salt), so if you really want a long term backup, make it on an M disk.
     
  6. kgedelian2000

    kgedelian2000 New Member

    I have dvds from almost 20 years ago that play fine,
     
  7. Crower

    Crower Well-Known Member

    Are you talking about store-bought DVDs or copied DVDs? There is a difference. Manufactured DVDs are replicated and don't use a dye layer that can fade. They would be expected to last in excess of 20 years if stored in a reasonable manner. Copied DVDs however, use a fade-prone dye - refer back to my post (#5). They can have a short or long life and their life greatly depends on storage conditions and the original type of dye used. Cheaper writeable media can go bad real short-term if stored improperly (and even if stored properly sometimes).
     
    John-John likes this.