How to make a gmod server run 24/7?

buy a vps and make a server off it. Or buy a host dedicated to gmod

serenity servers, its cheap and they offer a free website host with a server

The best way is to buy a VPS server (linux or windows). Then you can make on him 24/7 server

Buy a VPS for fairly cheap to run an (8) player server on at first as a development server or just to mess around then if it has potential, update at a later date.

You would need a dedicated host for the server so they run 24/7. You could also just keep your computer on all night.

You need to make it dedicated either leaving your computer on or buying a server hosting.

you can leave ur computer on running the dedicated server or purchase a server hosting service

You can buy a server on a host website. It's very cheap, but it runs very smooth and has no lags, if you choose the right one. But you could also buy a own VPS and host your server on it.

just like everyone else said, buy a VPS from NFOservers or somewhere

u need buy some virtual machine server, and install gmod server on it