1) Fastest in terms of read/write
2) Store the largest number of files in single directory (100+ million)
Error checking, rollbacks, etc are not nessecary as the data is backed up daily to another external drive with all those bells and whistles. This is purely required for performance and ease of use (hence the single directory requirements).
I recall reading an article once that said Linux cops out at about 10000 files per folder. This kind sucks, is there a work around short of re-writing the FS driver?
Cheers