Real data persistence

Scientists working scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory and the University of California have developed a chip which can pack data at densities thousands of times greater than current technology. The chips use a "crystalline iron nanoparticle shuttle enclosed within the hollow of a multiwalled carbon nanotube". These chips can store a trillion bits of data per square inch and, due to the nanotubes' thermodynamic stability, can retain the data for a billion years. Now that's what you call persistent.

Apparently the technology could be on the market within the next two years. All we need now is a device for maintaining a Locoscript to Whatever convertor which will last for a similar length of time...