I will need some help in seeing what all these components are for. I'm not thinking about an Alienware Server, but this lays out all the parts in an easy way so I chose it as an example:
The processor is an easy matter.
The operating system will be self-installed linux, not windows.
The memory, I'm assuming, is how fast the server runs?
What are the common trays, and are two necessary?
What are all the harddrives about? Do they all contain different data, or the same thing just mirrors (RAID)?
What are controllers, and would a second one be nice? What exactly do they control?
CD-ROM, video card, monitor, keyboard, mouse, and mousepad are self-explanatory.
What is management software used for, and what is NOS support?
Forget the productivity and the licenses...
Of the peripherals, accessories, and media, which are necessary, which are unnecessary, and which are good to get but not necessary? :P
The power supply is self-explanatory...
The network card... would this be used to connect to the service provider?
I kind of get how RAID works, but in this case the RAID configuration's wording of directions baffles me. Additionally, out of all the terms, RAID 1 is the only one I'm familiar with. What are the others?
What is Hot Spare Hard Drive RAID Setup?
What are harddrive backplanes, and are additional ones necessary?
The rest is self-explanatory.
Wow... that's a whole load of questions. I would google it, but upon past experience it's hard to get all the information in one spot and any information given isn't plain english... and I believe the pros here can explain in such a way that I can understand...