20 Apple TVs - how can I stream to them?

Question

I work for a 20-bed children's mental health hospital. We would like to use Apple TV to stream content into our patient's rooms. They get to select what they want from the library available on the "server". I have a few questions:
1) can I use iTunes on the "server" to allow 20+ ATVs to stream at the same time?
2) any idea how powerful the computer will need to be? I am planning on using a gigabit ethernet uplink from the server to a switch, and then each ATV will be wired with 100 base T, so that should take care of bandwidth, but how much processing will be required for 20 data streams? Would I need a RAID array?
Thanks,
John

Answer 1

You cannot use your iPhone as a router without being connected to data.
That is essentially what I said above. When streaming local content you won't incur any data but you can't use the feature while in airplane mode.
However; you can use an airport express (2nd generation) as a router without being conected to the internet.
Yes, An Airport Express is a router, which is what I recommended initially as it is a much better solution, glad it's all worked out.