Seagate announces Exos 30 TB hard drive with Mozaic 3+ technology.

Seagate has launched the Exos 30 TB hard drive for the enterprise market utilizing breakthrough Mozaic 3+ technologies. The Exos 30 TB is an enterprise-grade device with Moziac 3+ as its main highlight. The latter allows it to pack 30 terabytes of information onto spinning magnetic platters into the hard disk. The key to this high density lies in several technological advancements. First, Mozaic 3+ replaces traditional iron-alloy magnetic media with smaller, denser platinum-alloy nanoparticles. This allows for more data to be stored in the same physical space, akin to writing more words on a page without increasing its size. Seagate reduced recorded bit size on the media by shifting from large iron-alloy magnetic grains to small platinum-alloy magnetic nanoparticles. This requires higher energies to write data, so Mozaic 3+ drives use a nanophotonic laser beaming light through a photonic funnel waveguide to excite surface electrons at the quantum antenna tip. The electrons heat a tiny area on the media hundreds of degrees, then the magnetic head passes by to record a bit of data before the media cools. To read data, a superfine magnetic reader senses each passing bit. The magnetic orientations of each bit versus a reference magnet alters the electrical resistance of the reader. A 12 nm RISC-V controller maintains accurate head tracking to the nanometer while processing 4 billion bits per second before sending them off to the computer.