Special Requirement to handle big amount of player


Currently we are using CMS version 1.7.9
In the future, we have meet some opportunity, to support one of our client in big amount of player.
The amount of player will approximately around 10000 player for our client outlet.
Do you have any suggestion about how we can handle 10000 player ?
Is there any special specification requirement for the network and hardware infrastructure and architecture ?
Is there any special requirement for CMS version and including CMS environment ?

Thank You