You can copy the whole ezp folder to your new server, and copy the database.
Then you will have to edit the file : site.ini.append.php in settings/override in order to specify which site you want to keep on each server. You should update the following lists of settings (by removing the option that belongs to a site that you do not want anymore).
You can clear your cache and then test to verify that everything is working fine.
Then, you can remove the files that are relative to a site that is not anymore on the server :
the files you have listed
the var/<siteN> files (depending if they are specific to your site - which you can see by looking your site.ini.append.php in settings/siteaccess/<siteN> )
Thanks for replying ....
I got what you said but, my problem is that i need to move 1 site from my server and ez installation to other server where there is eZ installed already and it already contains some ez sites.
In this case how should i proceed (is this possible .? ).can u please guide me in this ..?
Thank you, Sunil Mulay
Sunil, It would depend on whether the sites on the new server are sharing the same database, and whether you want the site you are moving to have access to their data.
If not it's easy, just add and activate the siteaccess and restore its database to the local database server.
If you want to merge databases... I'm not sure. Maybe someone else might have some ideas. it's undoubtedly possible, although you would need to be careful (use a testing instance) and make sure both instances are running exactly the same version of eZ Publish.