The 7000 and the 5000 (names are not Cisco's strong suit) do the tricky work of unifying servers, datastorage and virtualization software (a way to get one server to do the work of several so you get more bang from each).
My specialties include storage technologies applied to Big Data analytics (primary), data management, virtualization, and analysis of storage infrastructure acquisition alternatives.
Cloud storage in data centers will utilize the latest developments in physical storagevirtualization, deduplication and other methods to make the most effective use of physical storage assets.