1 min readUpdated Oct 4, 2026

How To Use FastDL On Your Action: Source Server

At Game Host Bros, your Action: Source server comes with FastDL, so players download your custom maps over the web instead of slowly through the game server. Everything is automatic: just upload your custom maps.

How Does FastDL Work?

  • Maps, materials, models, sounds and particles in your server's ahl2 folder (and in ahl2/custom) are synced to the fastdl folder when your server starts. They take no extra disk space.
  • Your server tells players where to download from by itself. Players need downloads allowed in the game's multiplayer options, which is on by default.
  • Files you delete from your server are removed from FastDL on the next start.

Using Your Own Download Server

If you already host your maps elsewhere, you can use that instead. See Download Redirect.