I'd like to use my BluRay burner and the blank BD-R disks I have to create backup copies of all of the (essentially arbitrary) data files that I have stored on one particular disk drive and under one particular directory (over on my FreeBSD file server, which is Samba-exporting the relevant filesystem to my Windows7 system, where I run ImgBurn).
I've already written a small Perl script which breaks up this great mass of data files into appropriately sized (25GB/23.3GiB) chunks such that no single file will be split across two of the target BD-R disks. This will make it easier to recover single files from the backup(s) should that ever be necessary.
What I've just now realized is that although I have been using ImgBurn happily for years (for DVD backups) I actually don't know what I'm doing when it comes to using this fine tool for data archiving.
Specifically, I am utterly confused about all of the available "Image Options", and would like some guidance.
For this specific (data file archiving) aplication, what would be best? ISO 9660? UDF? Joliet? All of the above? I'm totally in the dark. My only requirement is that the resulting burned BD-Rs should be readable on Win7 and also on recent vintage Linux systems. (It would be Nice if they were readable also on recent vintage FreeBSD systems, but that's not a hard and fast requirement.)
Also, with respect to UDF, I am being offered (by Imgburn) the choice of no fewer than six different UDF revision numbers. I have no idea which one of those will be "best" in this case, and don't have any idea what the pros and cons of the different versions are (and the ImgBurn guides and FAQ don't seem to say anything specifically about this). I've looked also at the summary of the UDF revisions on the applicable Wikipedia page, but it is all still rather opaque to me.
And last but not least should I just stick with the default of "MODE1"? What is "MODE2" used for? Is MODE2 adding more error correction data? If so, I might want to use that.
Advice on all of these points would be appreciated.
P.S. The one useful tidbit of info that I was actually able to gleen from the ImgBurn guides regarding the above topics was that ISO 9660 permits only ancient DOS 8.3 filenames (yecch) which would be totally non-usable for me, but that Joliet allows filenames up to 64 bytes (characters?) and UDF up to 128 bytes (characters?).
Of course, this all sort-of encourages me to use just straight UDF, but it also begs the question: What will happen if I have a file in a directory that has a 129-byte long filename and if I then ask ImgBurn to burn that (In straight UDF format) ? Will the filename just get silently truncated?? That would be Bad. And also, do these limits apply to just the filenames, or do they apply to the complete pathnames?
Thanks in advance for any & all replies.