We have an IIS-7 server on Windows 2008. A custom web app writes files that clients upload to an NTFS partition. Each year we have between between 40,000-60,000 folders with 2-20 files in each. Trying to open a folder for the year in explorer is a problem and can take minutes to build the folder list. This got me wandering if this is a problem for the system in general?
I guess the simpler question is if our web app accesses files directly by the exact path would having tens of thousands of files still slow things down?