The Plan for the setup of the Primary server was to get an ATX version of the motherboard. The reason the AT versions of the motherboard would not work is because they didn't have the clearance to install two of the Adaptec Multi-Port cards. The ATX version had more PCI slots and the CPU and Fan were not in the path of the slots.
This would have allowed for all 7 computer labs to have a private 100MB Ethernet connect. These Adaptec cards had a processor for each of the ports to allow full speed. This would allow the server to put out up to 800MB of data across the ports. The hard drive configuration would have remained the same. The system had mirrored 1GB drives that served as the SYS volume, and handled the mail process for almost all of the 1350 users in addition to handling the system software. The mirroring kept a copy of information on both drives, so a hard drive failure would not stop the lan from continuing to support the users. In addition, the system also had a pair of 9GB mirrored drives that handled all the software for the labs. Except for the Windows software itself almost every was run from the server. There were 2 additional 9GB hard drives in the system that were used to run the math software. These were setup in accordance with the vendor. It was a matter of using this server, or not doing it at all. Eventually, I would have recommended getting mirrored drives for anything. Without mirrored drives, a drive failure causes a lose of server access. The drive must be replaced and then the data must be restored. This can take many hours or days. A mirrored system failure continues to run after a failure, and the drive can replaced in a matter of minutes and remirrored.
The current server the campus is running on has a single hard drive with no mirroring, but since there are no real users on it, it doesn't make much difference since it is just a print server.