Users Guide

Hardware
Topics:
• Server hardware configuration
•
DIMM installation and removal
• PMem hardware configuration
Server hardware configuration
PMem is supported in R640, R740/R740XD, R840, R940, R940xa, MX740c, and MX840c PowerEdge servers with second-
generation Intel Xeon Scalable Processors of Gold and Platinum grade. See PMem configurations for a list of fully supported
and validated PMem configurations in two-socket servers. Four-socket configurations are a direct scale up of two-socket
configurations.
NOTE: For PowerEdge R840/R940/R940xa, 2400 W or 1600 W PSUs are required when Intel PMems are present in the
system. When 1600 W PSUs are used, high line (~220 V) voltage is required. If these guidelines are not followed the system
may not have sufficient power holdup in an AC loss scenario to flush in-flight data contents to persistent media. All systems
that are built from Dell Technologies factories will be preconfigured to meet these guidelines.
DIMM installation and removal
Industry standard DIMM practices and procedures must be followed while handling, installing, or removing PMem memories.
For more details on procedures for installing/removing modules, see the "Standard Practices and Procedures - Module Insertion
Procedure for DIMM and miniDIMM Connectors" documentation by JEDEC.
JEDEC Standards (www.jedec.org): Document Number SPP-023B.
PMem hardware configuration
PMem Recommended Topologies
This section contains the high-level introduction on PMem configuration and provisioning concepts.
The following topologies are recommended per CPU socket. For multiple socket systems with more than one PMem, each
socket should be populated identically.
See the Installation and Service Manual for Memory installation guidelines of respective servers.
NOTE: The following image and table is for reference which displays the R740/R740XD CPU and DIMM slot locations.
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8 Hardware