The Advanced News Server uniquely identifies attached binary objects and will store only one copy of each posted object, no matter with how many messages it comes with.
Earthquake is capable of handling several full bi directional feeds, even with low end hardware.
A single CPU machine with IDE hard drives should be capable of saturating a 100 Mbit ethernet connection. It can add offline reading capabilities to existing news readers. It is intended to supply spool and offline news reading for a configured selection of newsgroups. S-news does the minimum required to maintain a conventional news spool and makes use of suck for news transport. The target user is a home or SOHO with a single modem connection to the Internet and serving a few workstations.