I have a very large NTFS volume with more than 20TB capacity and containing millions of files. If I put all of the files in the same folder, I know the performance is bad when I open the folder in Windows Explorer.
Is the performance still bad if I open one of the files directly in my program?
Best Answer
If you are opening the file directly there's no matter how many of files you got in there. but if you are using TAB auto-complete to access file faster it will definitely affect the performance.
I found some clues in here -> https://stackoverflow.com/questions/197162/ntfs-performance-and-large-volumes-of-files-and-directories