I tried to embrace BD-Rs for backups, and to some degree they are useful, but ultimately I have given up on them.
The 25GB discs are cheap, and have enough space for a considerable backup (depending on your needs). It's also possible to put 4K h264/h265 videos on one and play them on some players, but this isn't very convenient compared to other options.
The 50/100/128GB discs are far more expensive per GB, and have an awful failure rate for writing.
Write and read speeds leave a lot to be desired. Fast enough to stream video, but that's about it.
And consumer writable optical media has a poor lifespan, and will probably become corrupted within a decade.
I have moved on to LTO tapes. A single LTO-6 tape is about $10, and holds 100x more than a basic single-layer BD-R. Read and write speeds over 1gbps. Not appropriate for everyday access, but perfect for large long-term backups.
If I want to move files from device to device, especially multimedia, I just use a flash drive.
The 25GB discs are cheap, and have enough space for a considerable backup (depending on your needs). It's also possible to put 4K h264/h265 videos on one and play them on some players, but this isn't very convenient compared to other options.
The 50/100/128GB discs are far more expensive per GB, and have an awful failure rate for writing.
Write and read speeds leave a lot to be desired. Fast enough to stream video, but that's about it.
And consumer writable optical media has a poor lifespan, and will probably become corrupted within a decade.
I have moved on to LTO tapes. A single LTO-6 tape is about $10, and holds 100x more than a basic single-layer BD-R. Read and write speeds over 1gbps. Not appropriate for everyday access, but perfect for large long-term backups.
If I want to move files from device to device, especially multimedia, I just use a flash drive.