In the article they don't say if it's a re-writable device.
Supposing it's not, it would be useful only for big archives : you want to use the full 360 Tb available, because the crystal can be expensive. An average user don't have 360 Tb to write everyday.
If the crystal was cheap, or if you could build smaller crystals that store less Tb , it would be different.
As lifeformed said, nothing is said about the reading speed.
Or you create a novel filesystem that allows you to use an exotically large capacity, write-once volume as a less exotically large, write-many volume with built-in, block-level history.
Seems pretty easy. Just store your file system in some immutable tree structure (ala Haskell or Clojure, where "changes" don't actually change the tree but instead create a new tree referencing parts of the old tree).
Supposing it's not, it would be useful only for big archives : you want to use the full 360 Tb available, because the crystal can be expensive. An average user don't have 360 Tb to write everyday.
If the crystal was cheap, or if you could build smaller crystals that store less Tb , it would be different.
As lifeformed said, nothing is said about the reading speed.