[kristianp]

On the NVM topic, a quick google shows that it's an active research area:

Persistent B+-Trees in Non-Volatile Main Memory http://www.vldb.org/pvldb/vol8/p786-chen.pdf

How to Build a Non-Volatile Memory Database Management System https://www.cs.cmu.edu/~jarulraj/papers/2017.nvm.sigmod.pdf