How to change local backup directory to a secondary HDD?

Problem Description:
My main SSD is quite small. I want to change the local backup directory of my Project Zomboid instance (nichtBummeln01) so that all backups are stored on a secondary 1 TB HDD mounted at /home/amp/server-backups. I cannot find the exact setting/input field in the web interface to change the local storage path.

Additionally, I would like to know how to configure AMP so that it only keeps a maximum of 3 backups and automatically overwrites/deletes the oldest one when a new one is created, preventing my drive from filling up.

Steps to reproduce:

  • Step 1: Open the Project Zomboid instance configuration.
  • Step 2: Search for “Storage” or “Backup” in the settings.
  • Step 3: Only S3 Cloud options appear, but no local path input field or backup retention limit setting is visible.

Actions taken to resolve so far:

  • I successfully formatted and mounted the secondary HDD at /home/amp/server-backups with proper amp:amp permissions.
  • I configured a daily schedule for backups inside the instance.
  • I looked through the global “System Settings” as well as the instance settings and “File Manager”, but could not locate the local backup directory path or the backup limit setting.

Follow this guide:

You can respond to me if you run into any issues.