Users Guide

Introduction
Dell EMC offers Intel Optane persistent memory (PMem) 200 series, a nonvolatile memory that has the same form factor as a
standard DDR4 DIMM.
PMems come in three capacities: 128 GB, 256 GB, and 512 GB.
PMems are installed in the memory slots of the server and are compatible with RDIMMs and LRDIMMs.
PMem can be configured in two modes:
● Memory mode
● App-direct mode
In Memory mode, PMems act as volatile system memory and any RDIMMs or LRDIMMs installed operate as cache for the
PMems.
In App-direct mode, PMems operate as byte addressable memory mapped persistent memory. PMems and DRAM act as
independent memory resources. RDIMMs or LRDIMMs acts as volatile system memory. Applications can access persistent
memory by using memory load or store commands. Legacy applications that access storage as block devices can access
persistent memory (PMem) through the PMem block driver.
PMems do not require an extra power supply or battery and are inherently persistent.
This document is intended to help customers understand the basics of Intel's PMem technology integrated in Dell EMC
PowerEdge systems. It covers the fundamentals of installation and configuration of key settings for both the operating modes.
Topics:
• System requirements
• Terminology
System requirements
Table 1. System requirements
Component Minimum version required
System R650, R750, R750xa, MX750c, XR11, XR12
Processor 3
rd
Generation Intel Xeon Platinum or Gold processors
BIOS R650 - 1.1.1
R750 - 1.1.1
R750xa - 1.1.1
MX750c - 1.1.2
XR11, XR12 - 1.0.2
CPLD R650 - 1.0.1
R750 - 1.0.1
R750xa - 1.0.1
MX750c - 1.0.1
XR11, XR12 - 1.0.0
iDRAC 4.40.20.0
PMem firmware 02.02.00.1553
1
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