There's allegedly nothing different special about blu-ray M-DISCs

>Digging further around the M-disc site, it is noted that their section on longevity testing actually features no data about the BD-R discs at all. Indeed, if there were tests, the reports were not actually featured on the site at all. Further poking around in M-Disc Technology pages shows only references to their DVD products. In fact, it seems their patented “etched in stone” material may only apply to their DVD products.

https://goughlui.com/2015/10/16/review-tested-verbatim-lifet...

I have some M-DISC DVD's from ~15 years ago that still read fine.

That said I still have a lot of cheap CDs from 20 years ago that still read fine as well.

I've had a 25GB M-DISC BD-R kicking around on my desk without a sleeve or case for a while now to test durability. Sometimes I take it outside and leave it on my patio table for a few days to add some extra wear. I slide it around the desk, pick it up with normal greasy/dirty hands and handle it non-gently, flex it a bit, wash it off in the sink, and wipe it off with a cotton cloth. After four years of this abuse so far it still hasn't lost a single bit of data. I have noticed some of it takes a bit longer to get a good read so I'll probably lose data soon but this has been a hell of a lot of abuse so far.

yep, I have about 1 TB of data I backed up 5 years ago that I was looking thru. I used the BDXL 100 GB disks.

I’m a huge fan of mdisk but I’m not sure it makes much sense in the era of cheap cloud storage. There are many companies now that will give TB of storage for 9$/month. Also there is cheap archival storage on AWS.

I just started using M-Discs last month. Bought a compatible burner, a Pioneer Blu-ray Disc (BDR-XD07B), CAD $170. I'm pleased to report that my burning software (ImgBurn) worked fine with the new Pioneer DVD drive.

At $10 a pop, one is very prudent when choosing what to backup.