back up

hi all
i need to transfer files from one server to another,but i have to make up a backup with a datestamp on the destination server beore i move the new files from the source to the destination server.

example
source server destination server
a.sun a.sun

b.sun b.sun

d.sun c.sun
IN THE above example i need the files on the destination server to be afetr back up
a.sun datestamp
b.sun datestamp
c.sun datestamp
and then move the files frm the source server to the destination server
so the end result looks as follows
onn the destination server
back up maps :a.sun datestamp
b.sun datestamp
c.sun datestamp
new maps : a.sun
b.sun
d.sun

thank you all
bkan77