SNIA on Persistent Memory

To read this white paper from SNIA published on April 16, 2020, click on:
Introduction to SNIA Persistent Memory Performance Test Spec
Persistent Memory (PM), also described as Storage Class Memory (SCM), is broadly defined as high performance, low latency, byte addressable, non-volatile storage that sits on a cache-coherent link as opposed to traditional Block IO storage that sits on the PCIe bus. Future coherent PCIe implementations could also support PM. PM is expected to occupy a tier in the storage hierarchy below Main Memory DRAM and above NAND flash based SSDs.

Storage hierarchy