IMO, these days Gbit network is a must. If you want to install a lot
of machines, it would be perfect if your server has that much RAM,
that all packages for the clients will be cached in RAM if your
install server is also the package mirror or proxy. If you install
around 2GB of packages, this amount of RAM would be perfect for your
install server. In at the end of fai.log you will see how much
network traffic was received/transmitted. It looks like this:
eth0 rx_bytes 2113.26 Mbytes
eth0 tx_bytes 6.15 Mbytes
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regards Thomas