The basic components of servers and regular personal computers are, of course, the same. They all begin with a motherboard, which is much like the nervous system of the human body, in that it is connected to, and relays messages between, all the other components of the machine. If the motherboard is the nervous system, then the Central Processing Unit (CPU or Processor) is the brain. Translating electronic signals from all parts of the "body" into usable information, instructions, and rules, then issuing them back out to the other components as deemed necessary. Of course, no brain can function without being able to store, or remember, important or commonly used bits of information. That is why servers, PCs, and bodies alike are all outfitted with memory. The final major component is static, or "permanent" storage. In a computer this storage is in the form of Hard Drives, or similar disk storage. Using the human analogy, it can be compared to a notebook that a person would hold in their hand and reference information from as they needed it.