Some products apparently have to install dozens of thousands of files to look mature. If you install them on localy attached disks, installation and possibly deinstallation takes very long time. There is a way to speed it up significanly.
A little mental exercise: How many IO operations are necessary to create a file in a directory? Let's count:
a beginning of a transaction is written into filesystem's journal log
create an inode for the file
link the file inode with the directory inode