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> M-DISC – DVD/Blu-ray compatible discs citation needed. My DVD/Blu-ray writer does not support M-DISC > may last up to 1000 years or may not. Who knows ?

by hulitu 1mo ago

ricardobeat 1mo ago
The discs are entirely compliant with the Blu-Ray spec, there is no “compatibility” mark; anything made in the past 10-15 years should work fine. Your writer may be out of spec? Apparently original M-Disc DVDs required a more powerful laser than normal, but that is not the case for Blu-Ray.
- ButlerianJihad 1mo ago
  There is licensing and a compatibility mark, and I distinctly recall that my Philips BD-XL writer was badged for M-DISC and touted its capabilities. https://www.techpowerup.com/forums/threads/new-m-disc-to-provide-up-to-1-000-years-of-permanent-data-storage.150639/ https://www.techpowerup.com/forums/threads/new-m-disc-to-pro... I ran Linux backups on BD-XL 100GB discs for awhile. I lacked access to space in a salt mine, and the M-DISC media was prohibitively expensive, and unnecessary, since the Linux system, its drives, and its backups have all gone away by now. And nothing of value was lost. https://en.wikipedia.org/wiki/M-DISC#History https://en.wikipedia.org/wiki/M-DISC#History As of the 2020s, there are only 2 licensed manufacturers of M-Discs: Ritek, sold under the Ritek and RiDATA brands, and Verbatim with co-branded discs, marketed as the "Verbatim M-DISC".[14][15]
  - ricardobeat 1mo ago
    > And nothing of value was lost. Depends. There are still barely any options for archival-quality digital media for regular people. M-Disc is one of them. Most of what we have access to has a <30 year shelf life.
    - publlus_enigma 1mo ago
      Closer to < 10 years for hard drives, SD Cards and USB sticks. All of the combine controller electronics with the storage medium itself, which is another point of failure, and one not easily repaired. Their lack of electrical isolation from a host, combined with their lack of true write protection, makes them vulnerable during read. Sadly, 5.25" internal Blu-ray drives are all but extinct now, though USB-C variants are still somewhat readily available with transports from Hitachi-LG.
buckle8017 1mo ago
Confusingly you need an MDISC writer for some but not all disks. Any bluray reader will work to read tho.
gosub100 1mo ago
agreed. this is the same industry that blatantly lies about capacity too.

> M-DISC – DVD/Blu-ray compatible discs citation needed. My DVD/Blu-ray writer does not support M-DISC > may last up to 1000 years or may not. Who knows ?

by hulitu 1mo ago

> M-DISC – DVD/Blu-ray compatible discs citation needed. My DVD/Blu-ray writer does not support M-DISC > may last up to 1000 years or may not. Who knows ?

ricardobeat 1mo ago

The discs are entirely compliant with the Blu-Ray spec, there is no “compatibility” mark; anything made in the past 10-15 years should work fine. Your writer may be out of spec? Apparently original M-Disc DVDs required a more powerful laser than normal, but that is not the case for Blu-Ray.

ButlerianJihad 1mo ago
There is licensing and a compatibility mark, and I distinctly recall that my Philips BD-XL writer was badged for M-DISC and touted its capabilities. https://www.techpowerup.com/forums/threads/new-m-disc-to-provide-up-to-1-000-years-of-permanent-data-storage.150639/ https://www.techpowerup.com/forums/threads/new-m-disc-to-pro... I ran Linux backups on BD-XL 100GB discs for awhile. I lacked access to space in a salt mine, and the M-DISC media was prohibitively expensive, and unnecessary, since the Linux system, its drives, and its backups have all gone away by now. And nothing of value was lost. https://en.wikipedia.org/wiki/M-DISC#History https://en.wikipedia.org/wiki/M-DISC#History As of the 2020s, there are only 2 licensed manufacturers of M-Discs: Ritek, sold under the Ritek and RiDATA brands, and Verbatim with co-branded discs, marketed as the "Verbatim M-DISC".[14][15]
- ricardobeat 1mo ago
  > And nothing of value was lost. Depends. There are still barely any options for archival-quality digital media for regular people. M-Disc is one of them. Most of what we have access to has a <30 year shelf life.
  - publlus_enigma 1mo ago
    Closer to < 10 years for hard drives, SD Cards and USB sticks. All of the combine controller electronics with the storage medium itself, which is another point of failure, and one not easily repaired. Their lack of electrical isolation from a host, combined with their lack of true write protection, makes them vulnerable during read. Sadly, 5.25" internal Blu-ray drives are all but extinct now, though USB-C variants are still somewhat readily available with transports from Hitachi-LG.

buckle8017 1mo ago

Confusingly you need an MDISC writer for some but not all disks. Any bluray reader will work to read tho.

gosub100 1mo ago

agreed. this is the same industry that blatantly lies about capacity too.