• michaelalf@lemmy.worldEnglish
    31·
    1 day ago

    Yep! Quote from digitalfaq

    The BD-R write-once type is based on a completely new concept for the recording layer utilizing a two-layer structure composed of silicon (Si) and copper alloy (Cu) inorganic materials. When heated by the recording laser beam, these melt and the Si and Cu alloy become a composite forming recording marks. Because the material is inorganic, it is not affected by light, thus realizing a disc with outstandingly high reliability in terms of archivability.

    And another quote from the same source

    Write-once recordable DVD-R/DVD+R media (as well as CD-R media) all uses synthetic organic based dyes – usually azoic dyes (metallized azo chelates or azo metal chelate). Some of them are based on other synthetic organics, such as cyanine, dipyrrometheme or oxonol.

    • napoleonsdumbcousin@feddit.orgEnglish
      31·
      19 hours ago

      Your source is just a forum quoting manufacturer marketing texts.

      In an accelerated ageing study blu-ray performed worse than other discs:

      Overall, the stability of the Blu-ray formats was poor with many discs significantly degraded after only 21 days of accelerated ageing. In addition to large increases in error rates, many discs showed easily identifiable visible degradation in several different forms. In a comparison with other optical disc formats examined previously, Blu-ray stability ranked very low.

      https://www.degruyterbrill.com/de/document/doi/10.1515/res-2017-0016/html

      • michaelalf@lemmy.worldEnglish
        21·
        1 day ago

        You can get a 50 pack of Verbatim’s standard BD-R for ~$40 AUD, or their premium Datalifeplus discs for ~$100 AUD. I’ve used both of these discs, and I’ve run burn quality tests and they’re both great. This is just talking about single layer discs, so 25GB per disc. 50GB discs are reasonably priced, 100GB and 128GB start getting a bit rich.

        • HerbGrower@slrpnk.netEnglish
          2·
          1 day ago

          Oh yeah, its the very long life ones I was thinking of that cost a lot. If there are more regular ones at lower prices with still a moderate lifespan then that probably makes more sense.