aTV / AppleTV as file server on USB?

Hello,

Before I am buying an AppleTV and aTV: Is izt possible to hook up a Mac-formatted USB drive (1.5 TB) to the AppleTV’s USB stick and mount it as a “normal” share on other Macs over the local area network (best case: as a Bonjour-advertised service)? If so, does anyone know about performace?

Background: I would like to use this external storage for storing all my image sand accessing them through Aperture, which runs on my Macbook.

Thanks a lot,
Mercator

Unfortunately the AppleTV is not able to stream media to other devices.