General :: Test Data Transfer From System To Its Box Pc?

I build a new test machine where i need to bring data from live machine. the data is kind of flat files and some propreitary application axigen mail server.

now what i am suffering from, which commands to do first practise. there is remote site with 1mps speed of wireless between live and test machine. on daily basis aprox 14gb .tar.gz files it need to move it.

i found scp,rcp,rsync,sftp etc. which is fastest way to replicate or copy to remote machines.

the data is on live machine /var/opt/application and on remote same directory too /var/opt/application

i try using scp it take aprox 8-10 hours to copy single 14gb file.

if possible where to see such commands logs results, if anything get down error discontinue while copying.