remote sftp backup

[ohpvl]

hi I try move new server. so I install vestacp on my new server.

now on my old terminal (centos 6.8)
I used below command to genarate backup on new server

v-add-backup-host sftp my_ip username pass /home/backup


it not give any error nor any output. will backup genarate? my data about 1 tb.