I’ve used this space many times over the past year to discuss the decision process every solution engineer must go through to pick the most appropriate permanent storage for the appliance or compute platform they are working on. The amount of interest in this topic drove me to summarize that work into a concise article in Power Solutions Magazine where I go through the decision process on storage and give a few specific examples of the ramifications of those decisions.
I know this is a starting point for a much more complex discussion. So please have a look, and lets continue the discussion in the comments and on twitter. I hope to go into greater technical details over the coming year.