Chris Drage encounters affordable network storage for schools, the Buffalo TeraStation ES
Network Attached Storage (NAS) provides a central place to store all data. Most educational institutions store this on central servers with automatic back-up capabilities.
However, I've often heard network administrators complain: “Such-and-such department always exceeds its storage space on the server and must delete unused or old archived files and material if they want more for their students.” I have even seen heated arguments. What's needed are extra nimble storage devices.