[padial]

Hi,
i'm a newbie on this zimbra servers, i already have 2 installed mail servers, but there are a lot if things that i'm not sure of yet.
I have been looking in the forum, but i haven´t found what i really need.
I need to install some other zimbra mail servers, all of them with public ip. I have a 160 GB hard drive, 2 G of ram.

How many partitions should i create?
what would be the size for each partition?
where are the emails been saved?
how i save the emails and accounts in case i have to format the drive, or reinstall in another server?

and other things like that

thanks for your replies..... sorry for my tarzan-style writing, english its not my mother language, i do what i can