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Dell EMC PMem 100 Series User's Guide


Dell EMC now offers Intel Optane persistent memory (PMem), a nonvolatile memory that has the same form factor as a standard DDR4 DIMM. PMem in this document stands for AEP in 14G systems unless otherwise stated.

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 PowerEdge systems. It covers the fundamentals of installation and configuration of key settings for both the operating modes.

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