blob storage

I would like to use P* to store files.  These files will probably
range from 500K to 2 MB in size and there will be thousands upon
thousands of them.  I was wondering how P* stores blobs, if it is all
in one file, or if each blob is sored in it's own file.  The reason
being, I know that windows has a 2 GB limit on files, and if they are
not stored as their own files, I'll hit my limit FAST... and it'll do
me no good...  If this is going to be a problem, does anyone have any
suggestions?