Moving ISPconfig

[juampi]

Hi All!
I need moving ISPconfig from Server A to Server B.
Server A is a server in production. This must be repaire. I need moving all ispconfig: acounts, emails, passwords, webs...
I have backup of Server A:
/etc
/home/www
/var/lib/mysql

How can i do it?.

I think make:
1- Install software in Server B: postfix, mysql, php, apache, courier, proftpd and others.
2- Install a new ISPconfig
3- Replace the files /etc /home /var/lib/mysql

Is it correct?

I can't install a software for backup. I only can use scp or rsync.

Regards,