From what i know of it and certainly do additional research. It is POW coin because it takes hardware and electricity to mine them, even though its not "processors". Using storage instead of video cards or asics that still cost resources as that storage is not free people still have to pay to run them. It is a limited supply as well and that makes it a low risk coin and certainly worth having some.
I am a huge proponent in diversifying your portfolio, little bites of allot of coins bought over time.