Comment on the paper. Provide a short (a few sentences) summary of the focus of the paper or key arguments made. Make sure to specifically address these points:

1. What was the main motivation for RAID in this paper?
2. Did predictions of processor performance and disk capacity hold?
3. How did the proposed designs balance performance and capacity from RAID1 to RADI5?
4. What were some of the open issues?
5. In retrospect, what do you think turned out to be the important contributions? What did the authors get wrong?

Your comments do not need to be long at all; I mostly want to make sure that you've thought about the important parts of each paper.