backup with rsync

how to backup through ssh from data server to backup server
login to server

make sure you're running screen
screen

check whether there is enough room on disk
df -h

rsync -avrzhP --exclude '@eaDir' admin@192.168.50.200:/volume1/Data-2014/ /mnt/data_v3

P - show progress

Detach screen
control + A
control + D

Reattach
control + R
logout