server_backup_retention_modeDefault backup retention when limit is reached (servers/VMs can override per entity). Hard limit blocks new backups. FIFO rolling removes the oldest eligible backup to make room.
serversConfigInterface::SERVER_BACKUP_RETENTION_MODErequired|string|max:255hard_limitOptions: hard_limit, fifo_rolling
featherpanel saas getsetting server_backup_retention_mode
featherpanel saas setsetting server_backup_retention_mode "<value>"