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White DIMM slots denote the first slot of a channel. For 1 DPC (DIMM per channel) populate white slotsonly.

A minimum of one DIMM is required per server.

Install DIMMs only if the corresponding processor is installed.

If only one processor is installed in a two processor system, only half of the DIMM slots are available.

To maximize performance, it is recommended to balance the total memory capacity between allinstalled processors and to load the channels similarly whenever possible.

When two processors are installed, balance the DIMMs across the two processors.

Populate DIMMs from heaviest load (quad-rank) to lightest load (single-rank) within a channel.Heaviest load (DIMM with most ranks) within a channel goes furthest from the processor.

Do not mix RDIMMs or LRDIMMs.

LRDIMMs are supported up to 3 DIMMs per channel.

DIMMs of different speeds may be mixed in any order, the server will select a common optimal speed.

The maximum memory speed is a function of the memory type, memory configuration, and processormodel.

The maximum memory capacity is a function of the memory type and number of installed processors.

HPE memory from previous generation servers is not compatible with the DL380 Gen9 Server. CertainHPE SmartMemory features such as memory authentication and enhanced performance may not besupported.

To realize the performance memory capabilities listed in this document, HPE SmartMemory is required

For memory population rules and additional memory guidelines, Click here to access DL380 Gen9 user guide .

There are four (4) memory channels per processor, eight (8) channels per 2 processor server.

There are three (3) DIMM slots for each memory channel, twenty four (24) total slots for 2 processorserver.

Memory channels1 and 3 consists of the three (3) DIMMs that are furthest from the processor.

Memory channel 2 and 4 consists of the three (3) DIMMs that are closest to the processor.

Click here to view the Quickspecs of the HPE ProLiant DL380 Gen9 Server for additional information.