What type of (SANs) do we need?

Storage area networks (SANs)

We are a small company running NT servers and Windows 98 workstations. Our business develops allot of AutoCAD and Microstation drawings. Our current server has a 19 GB raid array and we back-up completed projects on CD.

My Question:

We would like to have some alternate storage so all our archived projects would be available from our network (Ethernet 10 base T). The solution may need to be expandable.

Would anyone have any solid ideas that may help?

Thank You

Brian