There was a post recently about building a home fileserver that mentioned a file system that did this - it was just a layer on top of existing disks and file systems and sorted files by directory (and could send a file to multiple drives if so desired).
I can’t find it now but it was an interesting website.
Yep - that was it - and honestly for home use may be a much better option than the big boys like ZFS et al - especially if most of your data is backed up on the original media and in millions of stores nationwide wide (DVD rips, etc).
I can’t find it now but it was an interesting website.