3 ms·

We can have this architecture today. Writing an OS is hard, though.

• nine_k 5y ago
  Halfway, I'd say, because even if NVMe is fast, it's not that fast. For instance, an IDE, instead of keeping the parse trees in RAM, has to use a database on a disk for persistence, while caching a hot subset in RAM for speed. When all of your disk becomes RAM disk, only persistent, things already change in interesting ways. But hardware based on a persistent-RAM-only design would definitely need a very different OS. (With a Linux compatibility layer, inevitably, though.)