220Gbs/month? Are you serious? Who on Earth hosts that and how much are they charging? How many views/month does that translate into?
On the hardware side you'll be needing very big, very fast HDs - probably SCSI RAID. You'll probably need a fairly decent CPU (duals even).
As it's static content, I wouldn't think RAM would be a top priority, but it's cheap so you may aswell get a fair whack just to be safe.
You might want to look into server-side caching solutions though 🙂