processor servers

I want to set up multiple dedicated game servers on one system. How would I go about this task?
I have everything I think I need as far as hardware is concerned. I have the processor, mobo, RAM, vid card, etc. I have a 10,000 RPM SATA harddrive with about 50 Gigs of space.
Now here are my questions:
1. Will i need more than 1 harddrive to host multiple servers?
2. If not, how do I config the harddrive to accomodate multiple servers?Do I need to partition?
3. Will I need a router even though the servers are a part of one machine?
Thanks
Although you can install multiple game servers on your machine, I highly doubt you can have them all running at the same time.
Your constraints will be processing power, memory and bandwidth of the network connection(s).
I would install each game server on its own partition.
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