Sql Server 2005 And Images Suggestions???

hi,

i am working on a website that will be storing millions of images. i have read various advantages/disadvantages of saving the images on sql vs. file system.

i would like to keep all the data in one location (sql server in this case), so what i had in mind is following:
i am going to save the original image data on a sql server. now, the website user can view a (multiple) thumbnail version(s) of the original image and the orig. image itself, so instead of getting the original image from sql and resizing it everytime, i was going to create a file(s) on a sep. server with the resized image(s) that would be called instead (think of it as file-cache). this would reduce the load on the sql server drastically since all the thumbnails (and orig. image) would have the file version of themselfes and would be loaded from the separate server. this way i could have all my data on a sql server, have thumbnail images on an "image server" and everything should be fine with the exception of the increased disk space.
Also, i would not have to worry about having 2 backups since i have all the data on sql and each image/thumbnail would be file-cached on it's first call. if the file-cache of the image is not available for whatever reason i would just load straight from the db.

i would appreciate any suggestions on this.

thanks :)