Recommended HW configuration?

Hello I cannot find any recommended HW configuration for Dedicated server.
I want to have 30 slots 24 active plaers 6 spectators.
Can someone advise me on HW config, connectivity and what OS should i use?
Thank you
I want to have 30 slots 24 active plaers 6 spectators.
Can someone advise me on HW config, connectivity and what OS should i use?
Thank you