The explosion in the amount of data generated by iot devices is forcing companies to rethink their iot storage strategies.Dilip Sarangan, Frost&Sullivan's global research director for Internet of things and digital transformation, says, "right now, a lot of companies don't really know what data is really useful, but once analyzed, it can help them make business decisions."Gartner, a research firm, estimates that 24 billion internet-of-things devices will be generating huge amounts of data by 2020.So the question is whether to keep it, and if so, where to store it.