What is a Minecraft server? For those who don't know, a Minecraft server allows players to play together online or via a local area network. This is a dedicated Minecraft server, so it will always be running and connected to the internet (ideally), with its only purpose being hosting the Minecraft world. Players can log into the server from any location or computer as long as the connection speed is fast enough. The server isn't actually loading models or playing the game, it is only responsible for sending information about the world to the connected players and updating the world as players manipulate it. For a server to run smoothly, internet speed and components like the CPU and RAM (size, not speed) are important factors to consider.