Here is how to remotely copy your Brocade device running FabricOS to a remote TFTP server.
To copy the currently running configuration :
copy startup-config tftp <TFTP_Server_IP> startup-config.cfg
To copy the configuration saved to the flash memory :
copy run tftp <TFTP_Server_IP> switch-name.cfg
To restore the remote config to your device :
copy tftp start <TFTP_Server_IP> switch-name.cfg