Ours is a data-centric world. Many modern inventions and occupations rely on data. Artificial intelligence feasts on it. Machine learning identifies patterns within it. Internet of Things devices generate and transmit it. Genomics, bioinformatics, climate science, telecommunications, finance, health care and so many more fields depend on it.For massive datasets to be of use, they must be stored somehow. More than 70 percent of the world’s data is kept in arrays of magnetic disk drives—all of whi...