so for the most part i don't think i can answer in detail, but in public situations hi5's response has been that they have a dedicated pool of servers running t

so for the most part i don't think i can answer in detail, but in public situations hi5's response has been that they have a dedicated pool of servers running the upload, and they store the file on a static server. once that server fills up, they provision a new one. i will call this the viking image upload process, as its like a viking burial process. each one of those images is then buffered by a CDN. i should point out that hi5 has more photo uploads per day than flickr does.