Racetrack memory mentioned in the text of "Spin torque dynamics with noise in magnetic nanosystems (Phys. Rev. B 82, 144404 (2010))": http://prb.aps.org/abstrac

Racetrack memory mentioned in the text of "Spin torque dynamics with noise in magnetic nanosystems (Phys. Rev. B 82, 144404 (2010))": http://prb.aps.org/abstract/PRB/v82/i14/e144404 http://prb.aps.org/abstract/PRB/v82/i14/e144404 Nik_2213 mentions in http://www.physorg.com/news/2010-11-racetrack-memory.html http://www.physorg.com/news/2010-11-racetrack-memory.html : "Sounds like bubble memory again... Big problem with that was organising data to access it efficiently. FIFO does have a significant latency as block sizes rise..." I'm betting existing SSD technology though.