It's not clear how much better than they are than regular media since there haven't been many tests. There are two that I'm aware of, one by the French Archives (who've done this a few times it so happens) and one by the US DoD.
The French found that M-DISC didn't perform much better than regular DVDs and that a weird kind of glass DVD beat everything else hands down.
The Americans found no errors at all in their tests of M-DISC while all other disks encountered them.
I suspect the important differences were:
- The Americans' tested the discs after light exposure, the French did not. It may be that the light caused the regular DVDs to fail but not the M-DISC.
- The French tests were far longer (1000h) than the Americans' (24h). It may be that M-DISC can't survive the adverse conditions past a certain point that the Americans didn't reach.
Also as far as I'm aware, there are no tests of the Blu-Ray variant of M-DISC.
Personally, given the cost of M-DISC, I'd buy a few cheap terrible Blu-Rays instead and just make sure they're not exposed to too much light.
> Burnable discs use an organic dye which oxidizes over time.
This is only true of DVDs and a rare variant of Blu-Ray called LTH. Even cheap shitty Blu-Rays from Chinese manufacturers use inorganic dyes these days.
Also, the French Archives did a test of a variety of DVDs for longevity in adverse conditions and found that M-DISC didn't last significantly longer than competitors, even those with inorganic dyes: https://documents.lne.fr/publications/guides-documents-techn...
I suspect the difference between the French and US tests might be the French using a longer test duration and the Americans using light. The French went up to 1000h while the Americans only went to 24 as far as I can tell.
And unlike DVDs, I haven't seen any studies of longevity for M-DISC Blu-Rays.
The French found that M-DISC didn't perform much better than regular DVDs and that a weird kind of glass DVD beat everything else hands down.
The Americans found no errors at all in their tests of M-DISC while all other disks encountered them.
I suspect the important differences were:
- The Americans' tested the discs after light exposure, the French did not. It may be that the light caused the regular DVDs to fail but not the M-DISC.
- The French tests were far longer (1000h) than the Americans' (24h). It may be that M-DISC can't survive the adverse conditions past a certain point that the Americans didn't reach.
Also as far as I'm aware, there are no tests of the Blu-Ray variant of M-DISC.
Personally, given the cost of M-DISC, I'd buy a few cheap terrible Blu-Rays instead and just make sure they're not exposed to too much light.
French test: https://documents.lne.fr/publications/guides-documents-techn...
American: http://www.esystor.com/images/China_Lake_Full_Report.pdf