HPE ProLiant DL365 Gen11 Compatible Memory and DIMM Options

The HPE ProLiant DL365 Gen11 uses registered DDR5 Smart Memory with one DIMM per channel. This reference covers the memory option kits listed for this server, the supported slot and capacity architecture, DIMM mixing restrictions, and the hardware required for higher-capacity modules.

Memory specifications

Both processor installation and memory population determine the available capacity. One processor enables its 12 associated DIMM slots; all 24 slots require two processors.

DIMM slot locations and population

The motherboard provides a separate bank of 12 slots for each installed AMD EPYC processor. The manufacturer memory population diagram identifies CPU 0, CPU 1, and the front of the system.

The internal component diagram also identifies the DIMM banks and processor/heatsink locations. It shows a populated two-processor configuration, not the required population order for every configuration.

Supported DDR5 registered memory kits

The following manufacturer-listed option kits all use DDR5-4800. Rank, DRAM device organization, latency and capacity distinguish the kits. Do not assume that DIMMs with matching speeds can be mixed.

Standard registered DIMMs

3DS registered DIMMs

The 128GB and 256GB options use 3DS registered memory. These higher-density kits have additional cooling requirements and cannot be intermixed with non-3DS DIMMs.

Memory mixing and configuration requirements

Mixing x4 and x8 DIMMs is not allowed. The QuickSpecs also prohibits mixing 3DS and non-3DS memory. Choose a uniform and supported memory organization when planning upgrades, not just matching module speed and capacity.

Install memory only in slots belonging to installed processors. Balance DIMM capacity between processors and distribute DIMMs across both processors when two CPUs are installed. The published 6TB maximum is not attainable with a single processor.

DIMM blanks and supporting hardware

The QuickSpecs includes a DDR4-named blank kit in its Gen11 memory configuration section. The DDR4 designation is the manufacturer product name of the blank, not an assertion that this server supports DDR4 memory modules.

Cooling components associated with memory configurations

High-density 128GB or 256GB memory selection requires performance heatsinks and seven performance fan kits. The server has separate standard and performance cooling options. These are supporting hardware references, not additional DIMM options.

For systems with 128GB or 256GB DIMMs, select performance cooling rather than relying on a low-power processor configuration to qualify for standard fans. Processor wattage, drive types and chassis configuration can introduce additional restrictions beyond the memory requirements.

Chassis context

All three CTO chassis families have the same stated 24-slot motherboard potential, but actual memory availability depends on installed CPU count. The EDSFF CTO configuration requires two processors; the GPU chassis has separate thermal and expansion conditions.

Installation and verification guidance

Before ordering memory, confirm the installed processor count, present DIMM organization, availability of the corresponding slots, and cooling kit. For a mixed-capacity or maximum-memory build, consult the HPE ProLiant Gen11 AMD EPYC 9004 memory population guidelines and use the HPE-approved configurator to validate the final bill of materials.

Documentation caution: The Standard Features section says all processors support up to 3TB memory per server, while the same section also states up to 3TB per processor and 6TB with two processors. The later two-processor capacity table and 24 x 256GB calculation support a 6TB platform maximum, but the single-server wording should be treated as inconsistent.