I think this will be the way storage goes in the future. With the introduction of memristor-based storage which is both non-volatile and as fast as DRAM and ch

I think this will be the way storage goes in the future. With the introduction of memristor-based storage which is both non-volatile and as fast as DRAM and cheaper to produce than mechanical drives, the need to distinguish between 'in memory' and 'on disk' becomes a great deal less important. The distinction which becomes important then is 'what is the user likely to need next'.