[Zope] ZPhotoAlbum and images in general

I'm a little confused about the Zope design for handling images. If I am uploading an image to my hosted web site why would I want my image file incorporated into the zodb (the data.fs file)? If I don't want to do this --- and I don't because it just feels funky because the zodb isn't a 'real' database -- then what are my alternatives. I guess the fact that zodb is storing everything in one big file makes me extremely nervous. Probably doesn't matter for smaller web sites but if I actually wanted to use this for larger sites it would be a real sticking point. Any advice on this point?