Memory Population Table; Dimm Ranks; Dimm Handling Guidelines - HPE ProLiant MicroServer Gen10 Plus User Manual

The memory operating speed is determined by the installed processor:
• Intel Pentium Gold processors support DIMM speed of up to 2400 MT/s.
• Intel Xeon E processors support DIMM speed of up to 2666 MT/s.

Memory population table

DIMM slot 2A
8 GB
16 GB
8 GB
16 GB

DIMM ranks

To understand and configure memory protection modes properly, an understanding of DIMM rank is helpful. Some DIMM
configuration requirements are based on these classifications.
A single-rank DIMM has one set of memory chips that is accessed while writing to or reading from the memory. A dual-
rank DIMM is similar to having two single-rank DIMMs on the same module, with only one rank accessible at a time. A
quad-rank DIMM is, effectively, two dual-rank DIMMs on the same module. Only one rank is accessible at a time. The
server memory control subsystem selects the proper rank within the DIMM when writing to or reading from the DIMM.
Dual- and quad-rank DIMMs provide the greatest capacity with the existing memory technology. For example, if current
DRAM technology supports 8 GB single-rank DIMMs, a dual-rank DIMM would be 16 GB, and a quad-rank DIMM would be
32 GB, and an octal-rank LRDIMM would be 64 GB.
LRDIMMs are labeled as quad- and octal-rank DIMMs. There are four and eight ranks of DRAM on the DIMM, but the
LRDIMM buffer creates an abstraction that allows the DIMM to appear as a logical dual-rank DIMM to the system. This is
called Rank Multiplication. The LRDIMM buffer also isolates the electrical loading of the DRAM from the system to allow
for faster operation. These two changes allow the system to support up to three LRDIMMs per memory channel, providing
for greater memory capacity and higher memory operating speed compared to quad-rank RDIMMs.

DIMM handling guidelines

When handling a DIMM, observe the following guidelines:
• Avoid electrostatic discharge.
• Always hold DIMMs by the side edges only.
• Avoid touching the connectors on the bottom of the DIMM.
• Never wrap your fingers around a DIMM.
• Avoid touching the components on the sides of the DIMM.
• Never bend or flex the DIMM.
CAUTION: Failure to properly handle DIMMs can cause damage to the components on the DIMM, as well as the
system board connector.
DIMM slot 1B
—
—
8 GB
16 GB
Memory capacity
8 GB
16 GB
16 GB
32 GB
Hardware options installation
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