help to move files

i have a routerboard that saves a test file every second

now i need to know how can i move it to a remote board or ftpserver

from the board as the board takes time to read all files if the server conects to the board

takes to long to do this as i must read all file first

server--------wireless -------------wireless board(with 6000 files)

i want it to do this

wireless(board 6000) send to server

or how can i set it to only read 10 files at a time

when the sevrer connects to the board and not to read *

has anyone got an idea how i can do this