If you want to get serious about long term data integrity look at the storage and maintaince of the torah.
Each comunity will keep several copies in the traditional form, treated leather with a fairly stable ink. Over the course of a year the entire text is read word by word with two observers looking over the shoulder of the reader and additional listeners following with more convenient copies just waiting to jump on any mistake.
If the readers/observers find worn lettering, that copy gets swapped out for further examination.
Now multiple all that (and more) by however many jewish communities follow those traditions all over the wolrd.
So if you really care about long term storage, you might just have to start a new religion.
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If you want to get serious about long term data integrity look at the storage and maintaince of the torah. Each comunity will keep several copies in the traditional form, treated leather with a fairly stable ink. Over the course of a year the entire text is read word by word with two observers looking over the shoulder of the reader and additional listeners following with more convenient copies just waiting to jump on any mistake. If the readers/observers find worn lettering, that copy gets swapped out for further examination. Now multiple all that (and more) by however many jewish communities follow those traditions all over the wolrd. So if you really care about long term storage, you might just have to start a new religion.