Paperless office and the volume of information processed
To give you an idea of the volume of information I process in my paperless office. Just one of the folders in my computer contains: over 100 thousand documents (over 2 million word count) taking about 7 Gb of disk space plus 300 Mb for the index files. My 500 Gb disk is already nearly full with all kind of info. Of course I use another disk as a backup. This year, one of my disks failed, but I only lost about 10 thousand pictures from my trips abroad (I didn't bother to backup them in time - now I repent that).
To be true, not all documents come from photoscanning. A lot of them are files recerived by e-mail in digital form or conference papers, government regulations, etc. downloaded from the web.