HP ProLiant DL360e Configuring and using DDR3 memory with HP ProLiant Gen8 Ser - Page 11

General rules, DIMM Population Order

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• Quad rank RDIMMs are not supported in HP ProLiant Gen8 servers. • LRDIMMs are capable of up to three DIMMs per channel. • RDIMMs operating at either 1.35V or 1.5V may be mixed in any order, but the system will operate at the higher voltage. • DIMMs of different speeds may be mixed in any order; the server will select the lowest common speed. General rules • The maximum memory speed is a function of the memory type, memory configuration, processor model, and ROM BIOs settings. • The maximum memory capacity is a function of the memory type and number of installed processors. • To realize the performance memory capabilities listed in this document, HP SmartMemory is required. DIMM Population Order Figure 3 shows the memory slot configuration for 24-slot 2P ProLiant DL380pGen8 server. In this drawing, the first memory slots for each channel on each processor are the white memory slots (A, B, C, and D). Figure 3: DIMM slots and population order for 24 slot 2P ProLiant Gen8 servers. In general, memory population order follows the same logic for all HP ProLiant servers - although the processors may not be located with a different physical arrangement relative to each other in some servers. To populate the server memory in the correct order, you should use the following rules: • When a single processor is installed in the system, install DIMMs in sequential alphabetical order - A, B, C, D... and so on. • When 2 processors are installed in the server, install DIMMs in sequential alphabetical order - P1-A, P2- A, P1-B, P2-B... and so on. • Within a given channel, you should populate DIMMs from the heaviest electrical load (dual-rank) to the lightest load (single-rank). 11

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11
•
Quad rank RDIMMs are not supported in HP ProLiant Gen8 servers.
•
LRDIMMs are capable of up to three DIMMs per channel.
•
RDIMMs operating at either 1.35V or 1.5V may be mixed in any order, but the system will operate at
the higher voltage.
•
DIMMs of different speeds may be mixed in any order; the server will select the lowest common speed.
General rules
•
The maximum memory speed is a function of the memory type, memory configuration, processor model,
and ROM BIOs settings.
•
The maximum memory capacity is a function of the memory type and number of installed processors.
•
To realize the performance memory capabilities listed in this document, HP SmartMemory is required.
DIMM Population Order
Figure 3 shows the memory slot configuration for 24-slot 2P ProLiant DL380pGen8 server. In this drawing,
the first memory slots for each channel on each processor are the white memory slots (A, B, C, and D).
Figure 3:
DIMM slots and population order for 24 slot 2P ProLiant Gen8 servers.
In general, memory population order follows the same logic for all HP ProLiant servers - although the
processors may not be located with a different physical arrangement relative to each other in some servers.
To populate the server memory in the correct order, you should use the following rules:
•
When a single processor is installed in the system, install DIMMs in sequential alphabetical order – A, B,
C, D… and so on.
•
When 2 processors are installed in the server, install DIMMs in sequential alphabetical order – P1-A, P2-
A, P1-B, P2-B… and so on.
•
Within a given channel, you should populate DIMMs from the heaviest electrical load (dual-rank) to the
lightest load (single-rank).