How to partition newly installed Red Hat 5 Enterprise Edition

How to partition Red Hat 5 Enterprise Edition-Linux general technology-Linux technology and application information? For more information, see the following. Hello everyone, I first came into contact with the Red Hat Enterprise Edition and had my own server for the first time. I installed the knowledge on books with the Red Hat Enterprise Edition 5, and the installation was successful, however, they are all automatically installed. I would like to ask experts, my hard disk is running G, I will install a Red Hat Enterprise Edition 5, and then apply an SP value-added service software on this server, how can I find partitions suitable and safe? I don't understand the partitions after automatic partitioning and installation. It seems that there is only one partition and one swap partition, in addition, liunx does not seem to be able to be understood by the existing win partition concept. partitions seem to be a folder, which makes me confused, therefore, unlike the concept that I can use partitions in WINDOWS, I want to separate clear system partitions, program partitions, and two data storage partitions. In liunx, to achieve this, we need to clearly understand how to partition and how much capacity is appropriate? The server is from dell1950.