Users Guide

Hardware

Topics:

• Server hardware configuration

•

DIMM installation and removal

• DCPMM hardware configuration

Server hardware configuration

DCPMM 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 DCPMM configurations for a list of fully supported

and validated DCPMM 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 DCPMMs 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 DCPMM 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.

DCPMM hardware configuration

DCPMM Recommended Topologies

This section contains the high-level introduction on DCPMM configuration and provisioning concepts.

The following topologies are recommended per CPU socket. For multiple socket systems with more than one DCPMM, 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.

8 Hardware