Do I have a limit on space for maps?

[Nick|NFo]

Game servers are allocated 20GB of storage space for maps and other custom content. This is not a hard limit; however, exceeding it will result in undefined behavior, which may include issues with migrations, backups, and restorations of your server.

For this reason, we greatly recommend keeping your total custom content below 20GB.

Disk usage is stated on the "Description" tab of your control panel at the bottom of the properties list.