Hardware:
BD-R: BD-R(DL/TL) disc is preferred with long longevity (recording layer made of inorganic alloy or composite).
Preferred storage condition: avoid light, dry, -10 to 23 degC. Don't exceed 32degC.
Software used:
7z:
package data with store option and volumes of 256MB. overall data < 17.5GB.
Avoid solid compression if compression is preferred as corruption of solid compressed file may cause all data inside not recoverable.
multipar:
generate par2 files for all contents to be backuped.
minimum block size if possbile (mostly CPU limited, won't increase size a lot with mimum block size, multipe of 4K might be convenient).
Set redundancy >5% and all data size within 18.6GB to leave 20+% ecc data room for dvdisater (it only writes about 22.5GB).
Lots of space used for CRC. This config is for important data. dvdisaster RS03 should be enought for regular data.
Imgburn or Anyburn:
generate iso file with data and par2 files (do add folders one by one if there are any).
dvdisaster:
disc level data ecc. argument iso with RS03 (fill all available free space of BD-R)
Current develepment: https://github.com/speed47/dvdisaster
Manual: https://github.com/speed47/dvdisaster/blob/master/documentation/user-manual/manual.pdf
Official develepment resumes at https://dvdisaster.jcea.es. Let's see how long it would last.
cdburnerxp:
burn iso file to BD-R disc.