It's ok to store checksums on the disk itself, because they won't be taking any significant space, meaning corruption of checksums file will be much less likely. Another way is to store your checksums file on a filesystem which implements checksums on FS level like zfs and btrfs. And finally printing them on a paper, I think that would only be useful for the most important data which should remain unchanged no matter what.
Humidity is something I've seen some issues with (not personally). For example, there's a UA-cam channel of a guy who collected Blu-ray movies, and he seems to have a fair number of discs getting rot or de-lamination. He also showed separately that some of the steelbook sets he has have spots of rust. It is not unreasonable to assume that the room he keeps the media in has humidity or damp problems.
Interesting. I'd worry mostly about moisture also. I'm not sure whether the dyes used in optical are engineered to be *not* water-soluble. But that would also be my big concern ... that moisture could permeate through the protective layers and directly dissolve the data pits. Normal temperatures feel less threatening to me. But I'm sure if you look up the durability experiments and accelerated aging tests somebody's generated empirical data to answer this.,
Going forward, I'm going to write a disk identifier on the inner label. Then catalog every disc using VVV with the disk identifier recorded. (Just my idea for doing this better - my approach has evolved as I've learned more about this stuff)
It's ok to store checksums on the disk itself, because they won't be taking any significant space, meaning corruption of checksums file will be much less likely. Another way is to store your checksums file on a filesystem which implements checksums on FS level like zfs and btrfs. And finally printing them on a paper, I think that would only be useful for the most important data which should remain unchanged no matter what.
Humidity is something I've seen some issues with (not personally).
For example, there's a UA-cam channel of a guy who collected Blu-ray movies, and he seems to have a fair number of discs getting rot or de-lamination. He also showed separately that some of the steelbook sets he has have spots of rust.
It is not unreasonable to assume that the room he keeps the media in has humidity or damp problems.
Interesting. I'd worry mostly about moisture also. I'm not sure whether the dyes used in optical are engineered to be *not* water-soluble. But that would also be my big concern ... that moisture could permeate through the protective layers and directly dissolve the data pits. Normal temperatures feel less threatening to me. But I'm sure if you look up the durability experiments and accelerated aging tests somebody's generated empirical data to answer this.,
Why are people not using silica gel to dehumidify the air tight container with disks? Seems obvious to me..
I was just going to ask about your thoughts on using permanent marker. I'm going to just use paper in the case.
Going forward, I'm going to write a disk identifier on the inner label. Then catalog every disc using VVV with the disk identifier recorded. (Just my idea for doing this better - my approach has evolved as I've learned more about this stuff)