BaFe tapes don't seem to have issues with "data fading". And BD-R uses phase-change recording, which is very, very stable and not affected by fungi or other way

BaFe tapes don't seem to have issues with "data fading". And BD-R uses phase-change recording, which is very, very stable and not affected by fungi or other ways the dye tends to rot/degrade in CD-R/DVD-R. Modern, high-coercitivity magnetic data tape only really has issues with hydrolysis of the binder that holds the magnetic particles to the PET film. This is prevented by very, very dry storage under about 15 degree Celsius. See e.g. this chart: https://i0.wp.com/clir.wordpress.clir.org/wp-content/uploads/sites/6/2017/02/figure_10.gif https://i0.wp.com/clir.wordpress.clir.org/wp-content/uploads... Further reading: https://www.clir.org/pubs/reports/pub54/estimation_of_les/ https://www.clir.org/pubs/reports/pub54/estimation_of_les/