I have a few TB stored locally in ~500000 files on NTFS partitions. The content of all files larger than ~50 KB is expendable. What is precious are:
- general file & dir structure and standard filesystem meta-data (e.g. creation/modification date, size) for all files
- content of files < 50 KB or matching *.docx/*.txt
- checksums for all files > 50 KB
It's too costly for me to do a full backup so I need to backup everything described above, except actual content for files > 50 KB. I will call the latter the mostly-ghost-backup. I also need to be able to browse the mostly-ghost-backup as a mounted drive/dir.
CD/DVD cataloging solutions (e.g. https://www.whereisit-soft.com/). Most such software has decayed as CDs/DVDs usage dropped and couldn't find something well suited anyway as most solutions are oriented to create a collector's view of the cataloged items instead of a filesystem view.
Backup software. Most is not well suited because there is no flexibility to capture just meta-data without file content.
Other explorers' plugins. Something like https://totalcmd.net/plugring/catalogmaker.html is very interesting but only works in Total Commander, is not flexible enough to capture content selectively and the project seems, at most, on life support.
Shell scripts. robocopy can replicate dir/file structure with all files 0 KB and additional calls will copy just what I need but I can't create a proper browsable mostly-ghost-backup drive, can't store checksums in a nice way and files without content will always show as 0 KB.